/**
 * @preserve jquery.layout 1.3.0 - Release Candidate 30.51
 * $Date: 2012-05-12 08:00:00 (Sat, 12 May 2012) $
 * $Rev: 303005 $
 *
 * Copyright (c) 2012 
 *   Fabrizio Balliano (http://www.fabrizioballiano.net)
 *   Kevin Dalman (http://allpro.net)
 *
 * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
 * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
 *
 * Changelog: http://layout.jquery-dev.net/changelog.cfm#1.3.0.rc30.5
 *
 * Docs: http://layout.jquery-dev.net/documentation.html
 * Tips: http://layout.jquery-dev.net/tips.html
 * Help: http://groups.google.com/group/jquery-ui-layout
 */

/* JavaDoc Info: http://code.google.com/closure/compiler/docs/js-for-compiler.html
 * {!Object}	non-nullable type (never NULL)
 * {?string}	nullable type (sometimes NULL) - default for {Object}
 * {number=}	optional parameter
 * {*}			ALL types
 */

// NOTE: For best readability, view with a fixed-width font and tabs equal to 4-chars

;
(function ($) {

    // alias Math methods - used a lot!
    var	min		= Math.min
    ,	max		= Math.max
    ,	round	= Math.floor
    ;
    function isStr (v) {
        return $.type(v) === "string";
    }

    function runPluginCallbacks (Instance, a_fn) {
        if ($.isArray(a_fn)) 
            for (var i=0, c=a_fn.length; i<c; i++) {
                var fn = a_fn[i];
                try {
                    if (isStr(fn)) // 'name' of a function
                        fn = eval(fn);
                    if ($.isFunction(fn))
                        fn( Instance );
                } catch (ex) {}
            }
    };



    /*
 *	GENERIC $.layout METHODS - used by all layouts
 */
    $.layout = {

        version:	"1.3.rc30.51"
        ,	
        revision:	0.033005 // 1.3.0 final = 1.0300 - major(n+).minor(nn)+patch(nn+)

        // LANGUAGE CUSTOMIZATION
        ,	
        language: {
            //	Tips and messages for resizers, togglers, custom buttons, etc.
            Open:			"Open"	// eg: "Open Pane"
            ,	
            Close:			"Close"
            ,	
            Resize:			"Resize"
            ,	
            Slide:			"Slide Open"
            ,	
            Pin:			"Pin"
            ,	
            Unpin:			"Un-Pin"
            ,	
            noRoomToOpenTip: "Not enough room to show this pane."
            ,	
            minSizeWarning:	"Panel has reached its minimum size"
            ,	
            maxSizeWarning:	"Panel has reached its maximum size"
            //	Developer error messages
            ,	
            pane:					"pane"		// description of "layout pane element"
            ,	
            selector:				"selector"	// description of "jQuery-selector"
            ,	
            errButton:				"Error Adding Button \n\nInvalid "
            ,	
            errContainerMissing:	"UI Layout Initialization Error\n\nThe specified layout-container does not exist."
            ,	
            errCenterPaneMissing:	"UI Layout Initialization Error\n\nThe center-pane element does not exist.\n\nThe center-pane is a required element."
            ,	
            errContainerHeight:		"UI Layout Initialization Warning\n\nThe layout-container \"CONTAINER\" has no height.\n\nTherefore the layout is 0-height and hence 'invisible'!"
        }

        // can update code here if $.browser is phased out
        ,	
        browser: {
            mozilla:	!!$.browser.mozilla
            ,	
            webkit:		!!$.browser.webkit || !!$.browser.safari // webkit = jQ 1.4
            ,	
            msie:		!!$.browser.msie
            ,	
            isIE6:		!!$.browser.msie && $.browser.version == 6
            ,	
            version:	$.browser.version // not used in Layout core, but may be used by plugins
        }

        // *PREDEFINED* EFFECTS & DEFAULTS 
        // MUST list effect here - OR MUST set an fxSettings option (can be an empty hash: {})
        ,	
        effects: {

            //	Pane Open/Close Animations
            slide: {
                all:	{
                    duration:  "fast"
                } // eg: duration: 1000, easing: "easeOutBounce"
                ,	
                north:	{
                    direction: "up"
                }
                ,	
                south:	{
                    direction: "down"
                }
                ,	
                east:	{
                    direction: "right"
                }
                ,	
                west:	{
                    direction: "left"
                }
            }
            ,	
            drop: {
                all:	{
                    duration:  "slow"
                }
                ,	
                north:	{
                    direction: "up"
                }
                ,	
                south:	{
                    direction: "down"
                }
                ,	
                east:	{
                    direction: "right"
                }
                ,	
                west:	{
                    direction: "left"
                }
            }
            ,	
            scale: {
                all:	{
                    duration:	"fast"
                }
            }
            //	these are not recommended, but can be used
            ,	
            blind:		{}
            ,	
            clip:		{}
            ,	
            explode:	{}
            ,	
            fade:		{}
            ,	
            fold:		{}
            ,	
            puff:		{}

            //	Pane Resize Animations
            ,	
            size: {
                all:	{
                    easing:	"swing"
                }
            }
        }

        // INTERNAL CONFIG DATA - DO NOT CHANGE THIS!
        ,	
        config: {
            optionRootKeys:	"effects,panes,north,south,west,east,center".split(",")
            ,	
            allPanes:		"north,south,west,east,center".split(",")
            ,	
            borderPanes:	"north,south,west,east".split(",")
            ,	
            oppositeEdge: {
                north:	"south"
                ,	
                south:	"north"
                ,	
                east: 	"west"
                ,	
                west: 	"east"
            }
            //	offscreen data
            ,	
            offscreenCSS:	{
                left: "-99999px", 
                right: "auto"
            } // used by hide/close if useOffscreenClose=true
            ,	
            offscreenReset:	"offscreenReset" // key used for data
            //	CSS used in multiple places
            ,	
            hidden:		{
                visibility: "hidden"
            }
            ,	
            visible:	{
                visibility: "visible"
            }
            //	layout element settings
            ,	
            resizers: {
                cssReq: {
                    position: 	"absolute"
                    ,	
                    padding: 	0
                    ,	
                    margin: 	0
                    ,	
                    fontSize:	"1px"
                    ,	
                    textAlign:	"left"	// to counter-act "center" alignment!
                    ,	
                    overflow: 	"hidden" // prevent toggler-button from overflowing
                //	SEE $.layout.defaults.zIndexes.resizer_normal
                }
                ,	
                cssDemo: { // DEMO CSS - applied if: options.PANE.applyDemoStyles=true
                    background: "#DDD"
                    ,	
                    border:		"none"
                }
            }
            ,	
            togglers: {
                cssReq: {
                    position: 	"absolute"
                    ,	
                    display: 	"block"
                    ,	
                    padding: 	0
                    ,	
                    margin: 	0
                    ,	
                    overflow:	"hidden"
                    ,	
                    textAlign:	"center"
                    ,	
                    fontSize:	"1px"
                    ,	
                    cursor: 	"pointer"
                    ,	
                    zIndex: 	1
                }
                ,	
                cssDemo: { // DEMO CSS - applied if: options.PANE.applyDemoStyles=true
                    background: "#AAA"
                }
            }
            ,	
            content: {
                cssReq: {
                    position:	"relative" /* contain floated or positioned elements */
                }
                ,	
                cssDemo: { // DEMO CSS - applied if: options.PANE.applyDemoStyles=true
                    overflow:	"auto"
                    ,	
                    padding:	"10px"
                }
                ,	
                cssDemoPane: { // DEMO CSS - REMOVE scrolling from 'pane' when it has a content-div
                    overflow:	"hidden"
                    ,	
                    padding:	0
                }
            }
            ,	
            panes: { // defaults for ALL panes - overridden by 'per-pane settings' below
                cssReq: {
                    position: 	"absolute"
                    ,	
                    margin:		0
                //	$.layout.defaults.zIndexes.pane_normal
                }
                ,	
                cssDemo: { // DEMO CSS - applied if: options.PANE.applyDemoStyles=true
                    padding:	"10px"
                    ,	
                    background:	"#FFF"
                    ,	
                    border:		"1px solid #BBB"
                    ,	
                    overflow:	"auto"
                }
            }
            ,	
            north: {
                side:			"Top"
                ,	
                sizeType:		"Height"
                ,	
                dir:			"horz"
                ,	
                cssReq: {
                    top: 		0
                    ,	
                    bottom: 	"auto"
                    ,	
                    left: 		0
                    ,	
                    right: 		0
                    ,	
                    width: 		"auto"
                //	height: 	DYNAMIC
                }
            }
            ,	
            south: {
                side:			"Bottom"
                ,	
                sizeType:		"Height"
                ,	
                dir:			"horz"
                ,	
                cssReq: {
                    top: 		"auto"
                    ,	
                    bottom: 	0
                    ,	
                    left: 		0
                    ,	
                    right: 		0
                    ,	
                    width: 		"auto"
                //	height: 	DYNAMIC
                }
            }
            ,	
            east: {
                side:			"Right"
                ,	
                sizeType:		"Width"
                ,	
                dir:			"vert"
                ,	
                cssReq: {
                    left: 		"auto"
                    ,	
                    right: 		0
                    ,	
                    top: 		"auto" // DYNAMIC
                    ,	
                    bottom: 	"auto" // DYNAMIC
                    ,	
                    height: 	"auto"
                //	width: 		DYNAMIC
                }
            }
            ,	
            west: {
                side:			"Left"
                ,	
                sizeType:		"Width"
                ,	
                dir:			"vert"
                ,	
                cssReq: {
                    left: 		0
                    ,	
                    right: 		"auto"
                    ,	
                    top: 		"auto" // DYNAMIC
                    ,	
                    bottom: 	"auto" // DYNAMIC
                    ,	
                    height: 	"auto"
                //	width: 		DYNAMIC
                }
            }
            ,	
            center: {
                dir:			"center"
                ,	
                cssReq: {
                    left: 		"auto" // DYNAMIC
                    ,	
                    right: 		"auto" // DYNAMIC
                    ,	
                    top: 		"auto" // DYNAMIC
                    ,	
                    bottom: 	"auto" // DYNAMIC
                    ,	
                    height: 	"auto"
                    ,	
                    width: 		"auto"
                }
            }
        }

        // CALLBACK FUNCTION NAMESPACE - used to store reusable callback functions
        ,	
        callbacks: {}

        ,	
        getParentPaneElem: function (el) {
            // must pass either a container or pane element
            var $el = $(el)
            ,	layout = $el.data("layout") || $el.data("parentLayout");
            if (layout) {
                var $cont = layout.container;
                // see if this container is directly-nested inside an outer-pane
                if ($cont.data("layoutPane")) return $cont;
                var $pane = $cont.closest("."+ $.layout.defaults.panes.paneClass);
                // if a pane was found, return it
                if ($pane.data("layoutPane")) return $pane;
            }
            return null;
        }

        ,	
        getParentPaneInstance: function (el) {
            // must pass either a container or pane element
            var $pane = $.layout.getParentPaneElem(el);
            return $pane ? $pane.data("layoutPane") : null;
        }

        ,	
        getParentLayoutInstance: function (el) {
            // must pass either a container or pane element
            var $pane = $.layout.getParentPaneElem(el);
            return $pane ? $pane.data("parentLayout") : null;
        }

        ,	
        getEventObject: function (evt) {
            return typeof evt === "object" && evt.stopPropagation ? evt : null;
        }
        ,	
        parsePaneName: function (evt_or_pane) {
            // getEventObject() automatically calls .stopPropagation(), WHICH MUST BE DONE!
            var evt = $.layout.getEventObject( evt_or_pane );
            if (evt) {
                // ALWAYS stop propagation of events triggered in Layout!
                evt.stopPropagation();
                return $(this).data("layoutEdge");
            }
            else
                return evt_or_pane;
        }


        // LAYOUT-PLUGIN REGISTRATION
        // more plugins can added beyond this default list
        ,	
        plugins: {
            draggable:		!!$.fn.draggable // resizing
            ,	
            effects: {
                core:		!!$.effects		// animimations (specific effects tested by initOptions)
                ,	
                slide:		$.effects && $.effects.slide // default effect
            }
        }

        //	arrays of plugin or other methods to be triggered for events in *each layout* - will be passed 'Instance'
        ,	
        onCreate:	[]	// runs when layout is just starting to be created - right after options are set
        ,	
        onLoad:		[]	// runs after layout container and global events init, but before initPanes is called
        ,	
        onReady:	[]	// runs after initialization *completes* - ie, after initPanes completes successfully
        ,	
        onDestroy:	[]	// runs after layout is destroyed
        ,	
        onUnload:	[]	// runs after layout is destroyed OR when page unloads
        ,	
        afterOpen:	[]	// runs after setAsOpen() completes
        ,	
        afterClose:	[]	// runs after setAsClosed() completes

        /*
	*	GENERIC UTILITY METHODS
	*/

        // calculate and return the scrollbar width, as an integer
        ,	
        scrollbarWidth:		function () {
            return window.scrollbarWidth  || $.layout.getScrollbarSize('width');
        }
        ,	
        scrollbarHeight:	function () {
            return window.scrollbarHeight || $.layout.getScrollbarSize('height');
        }
        ,	
        getScrollbarSize:	function (dim) {
            var $c	= $('<div style="position: absolute; top: -10000px; left: -10000px; width: 100px; height: 100px; overflow: scroll;"></div>').appendTo("body");
            var d	= {
                width: $c.width() - $c[0].clientWidth, 
                height: $c.height() - $c[0].clientHeight
            };
            $c.remove();
            window.scrollbarWidth	= d.width;
            window.scrollbarHeight	= d.height;
            return dim.match(/^(width|height)$/) ? d[dim] : d;
        }


        /**
	* Returns hash container 'display' and 'visibility'
	*
	* @see	$.swap() - swaps CSS, runs callback, resets CSS
	*/
        ,	
        showInvisibly: function ($E, force) {
            if (!$E) return {};
            if (!$E.jquery) $E = $($E);
            var CSS = {
                display:	$E.css('display')
                ,	
                visibility:	$E.css('visibility')
            };
            if (force || CSS.display === "none") { // only if not *already hidden*
                $E.css({
                    display: "block", 
                    visibility: "hidden"
                }); // show element 'invisibly' so can be measured
                return CSS;
            }
            else return {};
        }

        /**
	* Returns data for setting size of an element (container or a pane).
	*
	* @see  _create(), onWindowResize() for container, plus others for pane
	* @return JSON  Returns a hash of all dimensions: top, bottom, left, right, outerWidth, innerHeight, etc
	*/
        ,	
        getElementDimensions: function ($E) {
            var
            d	= {}			// dimensions hash
            ,	x	= d.css = {}	// CSS hash
            ,	i	= {}			// TEMP insets
            ,	b, p				// TEMP border, padding
            ,	N	= $.layout.cssNum
            ,	off = $E.offset()
            ;
            d.offsetLeft = off.left;
            d.offsetTop  = off.top;

            $.each("Left,Right,Top,Bottom".split(","), function (idx, e) { // e = edge
                b = x["border" + e] = $.layout.borderWidth($E, e);
                p = x["padding"+ e] = $.layout.cssNum($E, "padding"+e);
                i[e] = b + p; // total offset of content from outer side
                d["inset"+ e] = p;
            });

            d.offsetWidth	= $E.innerWidth();	// offsetWidth is used in calc when doing manual resize
            d.offsetHeight	= $E.innerHeight();	// ditto
            d.outerWidth	= $E.outerWidth();
            d.outerHeight	= $E.outerHeight();
            d.innerWidth	= max(0, d.outerWidth  - i.Left - i.Right);
            d.innerHeight	= max(0, d.outerHeight - i.Top  - i.Bottom);

            x.width		= $E.width();
            x.height	= $E.height();
            x.top		= N($E,"top",true);
            x.bottom	= N($E,"bottom",true);
            x.left		= N($E,"left",true);
            x.right		= N($E,"right",true);

            //d.visible	= $E.is(":visible");// && x.width > 0 && x.height > 0;

            return d;
        }

        ,	
        getElementCSS: function ($E, list) {
            var
            CSS	= {}
            ,	style	= $E[0].style
            ,	props	= list.split(",")
            ,	sides	= "Top,Bottom,Left,Right".split(",")
            ,	attrs	= "Color,Style,Width".split(",")
            ,	p, s, a, i, j, k
            ;
            for (i=0; i < props.length; i++) {
                p = props[i];
                if (p.match(/(border|padding|margin)$/))
                    for (j=0; j < 4; j++) {
                        s = sides[j];
                        if (p === "border")
                            for (k=0; k < 3; k++) {
                                a = attrs[k];
                                CSS[p+s+a] = style[p+s+a];
                            }
                        else
                            CSS[p+s] = style[p+s];
                    }
                else
                    CSS[p] = style[p];
            };
            return CSS
        }

        /**
	* Return the innerWidth for the current browser/doctype
	*
	* @see  initPanes(), sizeMidPanes(), initHandles(), sizeHandles()
	* @param  {Array.<Object>}	$E  Must pass a jQuery object - first element is processed
	* @param  {number=}			outerWidth (optional) Can pass a width, allowing calculations BEFORE element is resized
	* @return {number}			Returns the innerWidth of the elem by subtracting padding and borders
	*/
        ,	
        cssWidth: function ($E, outerWidth) {
            var
            b = $.layout.borderWidth
            ,	n = $.layout.cssNum
            ;
            // a 'calculated' outerHeight can be passed so borders and/or padding are removed if needed
            if (outerWidth <= 0) return 0;

            if (!$.support.boxModel) return outerWidth;

            // strip border and padding from outerWidth to get CSS Width
            var W = outerWidth
            - b($E, "Left")
            - b($E, "Right")
            - n($E, "paddingLeft")		
            - n($E, "paddingRight")
            ;

            return max(0,W);
        }

        /**
	* Return the innerHeight for the current browser/doctype
	*
	* @see  initPanes(), sizeMidPanes(), initHandles(), sizeHandles()
	* @param  {Array.<Object>}	$E  Must pass a jQuery object - first element is processed
	* @param  {number=}			outerHeight  (optional) Can pass a width, allowing calculations BEFORE element is resized
	* @return {number}			Returns the innerHeight of the elem by subtracting padding and borders
	*/
        ,	
        cssHeight: function ($E, outerHeight) {
            var
            b = $.layout.borderWidth
            ,	n = $.layout.cssNum
            ;
            // a 'calculated' outerHeight can be passed so borders and/or padding are removed if needed
            if (outerHeight <= 0) return 0;

            if (!$.support.boxModel) return outerHeight;

            // strip border and padding from outerHeight to get CSS Height
            var H = outerHeight
            - b($E, "Top")
            - b($E, "Bottom")
            - n($E, "paddingTop")
            - n($E, "paddingBottom")
            ;

            return max(0,H);
        }

        /**
	* Returns the 'current CSS numeric value' for a CSS property - 0 if property does not exist
	*
	* @see  Called by many methods
	* @param {Array.<Object>}	$E					Must pass a jQuery object - first element is processed
	* @param {string}			prop				The name of the CSS property, eg: top, width, etc.
	* @param {boolean=}			[allowAuto=false]	true = return 'auto' if that is value; false = return 0
	* @return {(string|number)}						Usually used to get an integer value for position (top, left) or size (height, width)
	*/
        ,	
        cssNum: function ($E, prop, allowAuto) {
            if (!$E.jquery) $E = $($E);
            var CSS = $.layout.showInvisibly($E)
            ,	p	= $.curCSS($E[0], prop, true)
            ,	v	= allowAuto && p=="auto" ? p : (parseInt(p, 10) || 0);
            $E.css( CSS ); // RESET
            return v;
        }

        ,	
        borderWidth: function (el, side) {
            if (el.jquery) el = el[0];
            var b = "border"+ side.substr(0,1).toUpperCase() + side.substr(1); // left => Left
            return $.curCSS(el, b+"Style", true) === "none" ? 0 : (parseInt($.curCSS(el, b+"Width", true), 10) || 0);
        }

        /**
	* Mouse-tracking utility - FUTURE REFERENCE
	*
	* init: if (!window.mouse) {
	*			window.mouse = { x: 0, y: 0 };
	*			$(document).mousemove( $.layout.trackMouse );
	*		}
	*
	* @param {Object}		evt
	*
,	trackMouse: function (evt) {
		window.mouse = { x: evt.clientX, y: evt.clientY };
	}
	*/

        /**
	* SUBROUTINE for preventPrematureSlideClose option
	*
	* @param {Object}		evt
	* @param {Object=}		el
	*/
        ,	
        isMouseOverElem: function (evt, el) {
            var
            $E	= $(el || this)
            ,	d	= $E.offset()
            ,	T	= d.top
            ,	L	= d.left
            ,	R	= L + $E.outerWidth()
            ,	B	= T + $E.outerHeight()
            ,	x	= evt.pageX	// evt.clientX ?
            ,	y	= evt.pageY	// evt.clientY ?
            ;
            // if X & Y are < 0, probably means is over an open SELECT
            return ($.layout.browser.msie && x < 0 && y < 0) || ((x >= L && x <= R) && (y >= T && y <= B));
        }

        /**
	* Message/Logging Utility
	*
	* @example $.layout.msg("My message");				// log text
	* @example $.layout.msg("My message", true);		// alert text
	* @example $.layout.msg({ foo: "bar" }, "Title");	// log hash-data, with custom title
	* @example $.layout.msg({ foo: "bar" }, true, "Title", { sort: false }); -OR-
	* @example $.layout.msg({ foo: "bar" }, "Title", { sort: false, display: true }); // alert hash-data
	*
	* @param {(Object|string)}			info			String message OR Hash/Array
	* @param {(Boolean|string|Object)=}	[popup=false]	True means alert-box - can be skipped
	* @param {(Object|string)=}			[debugTitle=""]	Title for Hash data - can be skipped
	* @param {Object=}					[debutOpts={}]	Extra options for debug output
	*/
        ,	
        msg: function (info, popup, debugTitle, debugOpts) {
            if ($.isPlainObject(info) && window.debugData) {
                if (typeof popup === "string") {
                    debugOpts	= debugTitle;
                    debugTitle	= popup;
                }
                else if (typeof debugTitle === "object") {
                    debugOpts	= debugTitle;
                    debugTitle	= null;
                }
                var t = debugTitle || "log( <object> )"
                ,	o = $.extend({
                    sort: false, 
                    returnHTML: false, 
                    display: false
                }, debugOpts);
                if (popup === true || o.display)
                    debugData( info, t, o );
                else if (window.console)
                    console.log(debugData( info, t, o ));
            }
            else if (popup)
                alert(info);
            else if (window.console)
                console.log(info);
            else {
                var id	= "#layoutLogger"
                ,	$l = $(id);
                if (!$l.length)
                    $l = createLog();
                $l.children("ul").append('<li style="padding: 4px 10px; margin: 0; border-top: 1px solid #CCC;">'+ info.replace(/\</g,"&lt;").replace(/\>/g,"&gt;") +'</li>');
            }

            function createLog () {
                var pos = $.support.fixedPosition ? 'fixed' : 'absolute'
                ,	$e = $('<div id="layoutLogger" style="position: '+ pos +'; top: 5px; z-index: 999999; max-width: 25%; overflow: hidden; border: 1px solid #000; border-radius: 5px; background: #FBFBFB; box-shadow: 0 2px 10px rgba(0,0,0,0.3);">'
                    +	'<div style="font-size: 13px; font-weight: bold; padding: 5px 10px; background: #F6F6F6; border-radius: 5px 5px 0 0; cursor: move;">'
                    +	'<span style="float: right; padding-left: 7px; cursor: pointer;" title="Remove Console" onclick="$(this).closest(\'#layoutLogger\').remove()">X</span>Layout console.log</div>'
                    +	'<ul style="font-size: 13px; font-weight: none; list-style: none; margin: 0; padding: 0 0 2px;"></ul>'
                    + '</div>'
                    ).appendTo("body");
                $e.css('left', $(window).width() - $e.outerWidth() - 5)
                if ($.ui.draggable) $e.draggable({
                    handle: ':first-child'
                });
                return $e;
            };
        }

    };

    var	lang = $.layout.language; // alias used in defaults...

    // DEFAULT OPTIONS - CHANGE IF DESIRED
    $.layout.defaults = {
        /*
 *	LAYOUT & LAYOUT-CONTAINER OPTIONS
 *	- none of these options are applicable to individual panes
 */
        name:						""			// Not required, but useful for buttons and used for the state-cookie
        ,	
        containerSelector:			""			// ONLY used when specifying a childOptions - to find container-element that is NOT directly-nested
        ,	
        containerClass:				"ui-layout-container" // layout-container element
        ,	
        scrollToBookmarkOnLoad:		true		// after creating a layout, scroll to bookmark in URL (.../page.htm#myBookmark)
        ,	
        resizeWithWindow:			true		// bind thisLayout.resizeAll() to the window.resize event
        ,	
        resizeWithWindowDelay:		200			// delay calling resizeAll because makes window resizing very jerky
        ,	
        resizeWithWindowMaxDelay:	0			// 0 = none - force resize every XX ms while window is being resized
        ,	
        onresizeall_start:			null		// CALLBACK when resizeAll() STARTS	- NOT pane-specific
        ,	
        onresizeall_end:			null		// CALLBACK when resizeAll() ENDS	- NOT pane-specific
        ,	
        onload_start:				null		// CALLBACK when Layout inits - after options initialized, but before elements
        ,	
        onload_end:					null		// CALLBACK when Layout inits - after EVERYTHING has been initialized
        ,	
        onunload_start:				null		// CALLBACK when Layout is destroyed OR onWindowUnload
        ,	
        onunload_end:				null		// CALLBACK when Layout is destroyed OR onWindowUnload
        ,	
        autoBindCustomButtons:		false		// search for buttons with ui-layout-button class and auto-bind them
        ,	
        initPanes:					true		// false = DO NOT initialize the panes onLoad - will init later
        ,	
        showErrorMessages:			true		// enables fatal error messages to warn developers of common errors
        ,	
        showDebugMessages:			false		// display console-and-alert debug msgs - IF this Layout version _has_ debugging code!
        //	Changing this zIndex value will cause other zIndex values to automatically change
        ,	
        zIndex:						null		// the PANE zIndex - resizers and masks will be +1
        //	DO NOT CHANGE the zIndex values below unless you clearly understand their relationships
        ,	
        zIndexes: {								// set _default_ z-index values here...
            pane_normal:			0			// normal z-index for panes
            ,	
            content_mask:			1			// applied to overlays used to mask content INSIDE panes during resizing
            ,	
            resizer_normal:			2			// normal z-index for resizer-bars
            ,	
            pane_sliding:			100			// applied to *BOTH* the pane and its resizer when a pane is 'slid open'
            ,	
            pane_animate:			1000		// applied to the pane when being animated - not applied to the resizer
            ,	
            resizer_drag:			10000		// applied to the CLONED resizer-bar when being 'dragged'
        }
        /*
 *	PANE DEFAULT SETTINGS
 *	- settings under the 'panes' key become the default settings for *all panes*
 *	- ALL pane-options can also be set specifically for each panes, which will override these 'default values'
 */
        ,	
        panes: { // default options for 'all panes' - will be overridden by 'per-pane settings'
            applyDemoStyles: 		false		// NOTE: renamed from applyDefaultStyles for clarity
            ,	
            closable:				true		// pane can open & close
            ,	
            resizable:				true		// when open, pane can be resized 
            ,	
            slidable:				true		// when closed, pane can 'slide open' over other panes - closes on mouse-out
            ,	
            initClosed:				false		// true = init pane as 'closed'
            ,	
            initHidden: 			false 		// true = init pane as 'hidden' - no resizer-bar/spacing
            //	SELECTORS
            //,	paneSelector:			""			// MUST be pane-specific - jQuery selector for pane
            ,	
            contentSelector:		".ui-layout-content" // INNER div/element to auto-size so only it scrolls, not the entire pane!
            ,	
            contentIgnoreSelector:	".ui-layout-ignore"	// element(s) to 'ignore' when measuring 'content'
            ,	
            findNestedContent:		false		// true = $P.find(contentSelector), false = $P.children(contentSelector)
            //	GENERIC ROOT-CLASSES - for auto-generated classNames
            ,	
            paneClass:				"ui-layout-pane"	// Layout Pane
            ,	
            resizerClass:			"ui-layout-resizer"	// Resizer Bar
            ,	
            togglerClass:			"ui-layout-toggler"	// Toggler Button
            ,	
            buttonClass:			"ui-layout-button"	// CUSTOM Buttons	- eg: '[ui-layout-button]-toggle/-open/-close/-pin'
            //	ELEMENT SIZE & SPACING
            //,	size:					100			// MUST be pane-specific -initial size of pane
            ,	
            minSize:				0			// when manually resizing a pane
            ,	
            maxSize:				0			// ditto, 0 = no limit
            ,	
            spacing_open:			6			// space between pane and adjacent panes - when pane is 'open'
            ,	
            spacing_closed:			6			// ditto - when pane is 'closed'
            ,	
            togglerLength_open:		50			// Length = WIDTH of toggler button on north/south sides - HEIGHT on east/west sides
            ,	
            togglerLength_closed: 	50			// 100% OR -1 means 'full height/width of resizer bar' - 0 means 'hidden'
            ,	
            togglerAlign_open:		"center"	// top/left, bottom/right, center, OR...
            ,	
            togglerAlign_closed:	"center"	// 1 => nn = offset from top/left, -1 => -nn == offset from bottom/right
            ,	
            togglerTip_open:		lang.Close	// Toggler tool-tip (title)
            ,	
            togglerTip_closed:		lang.Open	// ditto
            ,	
            togglerContent_open:	""			// text or HTML to put INSIDE the toggler
            ,	
            togglerContent_closed:	""			// ditto
            //	RESIZING OPTIONS
            ,	
            resizerDblClickToggle:	true		// 
            ,	
            autoResize:				true		// IF size is 'auto' or a percentage, then recalc 'pixel size' whenever the layout resizes
            ,	
            autoReopen:				true		// IF a pane was auto-closed due to noRoom, reopen it when there is room? False = leave it closed
            ,	
            resizerDragOpacity:		1			// option for ui.draggable
            //,	resizerCursor:			""			// MUST be pane-specific - cursor when over resizer-bar
            ,	
            maskContents:			false		// true = add DIV-mask over-or-inside this pane so can 'drag' over IFRAMES
            ,	
            maskObjects:			false		// true = add IFRAME-mask over-or-inside this pane to cover objects/applets - content-mask will overlay this mask
            ,	
            maskZindex:				null		// will override zIndexes.content_mask if specified - not applicable to iframe-panes
            ,	
            resizingGrid:			false		// grid size that the resizers will snap-to during resizing, eg: [20,20]
            ,	
            livePaneResizing:		false		// true = LIVE Resizing as resizer is dragged
            ,	
            liveContentResizing:	false		// true = re-measure header/footer heights as resizer is dragged
            ,	
            liveResizingTolerance:	1			// how many px change before pane resizes, to control performance
            //	TIPS & MESSAGES - also see lang object
            ,	
            noRoomToOpenTip:		lang.noRoomToOpenTip
            ,	
            resizerTip:				lang.Resize	// Resizer tool-tip (title)
            ,	
            sliderTip:				lang.Slide	// resizer-bar triggers 'sliding' when pane is closed
            ,	
            sliderCursor:			"pointer"	// cursor when resizer-bar will trigger 'sliding'
            ,	
            slideTrigger_open:		"click"		// click, dblclick, mouseenter
            ,	
            slideTrigger_close:		"mouseleave"// click, mouseleave
            ,	
            slideDelay_open:		300			// applies only for mouseenter event - 0 = instant open
            ,	
            slideDelay_close:		300			// applies only for mouseleave event (300ms is the minimum!)
            ,	
            hideTogglerOnSlide:		false		// when pane is slid-open, should the toggler show?
            ,	
            preventQuickSlideClose:	$.layout.browser.webkit // Chrome triggers slideClosed as it is opening
            ,	
            preventPrematureSlideClose: false	// handle incorrect mouseleave trigger, like when over a SELECT-list in IE
            //	HOT-KEYS & MISC
            ,	
            showOverflowOnHover:	false		// will bind allowOverflow() utility to pane.onMouseOver
            ,	
            enableCursorHotkey:		true		// enabled 'cursor' hotkeys
            //,	customHotkey:			""			// MUST be pane-specific - EITHER a charCode OR a character
            ,	
            customHotkeyModifier:	"SHIFT"		// either 'SHIFT', 'CTRL' or 'CTRL+SHIFT' - NOT 'ALT'
            //	PANE ANIMATION
            //	NOTE: fxSss_open, fxSss_close & fxSss_size options (eg: fxName_open) are auto-generated if not passed
            ,	
            fxName:					"slide" 	// ('none' or blank), slide, drop, scale -- only relevant to 'open' & 'close', NOT 'size'
            ,	
            fxSpeed:				null		// slow, normal, fast, 200, nnn - if passed, will OVERRIDE fxSettings.duration
            ,	
            fxSettings:				{}			// can be passed, eg: { easing: "easeOutBounce", duration: 1500 }
            ,	
            fxOpacityFix:			true		// tries to fix opacity in IE to restore anti-aliasing after animation
            ,	
            animatePaneSizing:		false		// true = animate resizing after dragging resizer-bar OR sizePane() is called
            /*  NOTE: Action-specific FX options are auto-generated from the options above if not specifically set:
		fxName_open:			"slide"		// 'Open' pane animation
		fnName_close:			"slide"		// 'Close' pane animation
		fxName_size:			"slide"		// 'Size' pane animation - when animatePaneSizing = true
		fxSpeed_open:			null
		fxSpeed_close:			null
		fxSpeed_size:			null
		fxSettings_open:		{}
		fxSettings_close:		{}
		fxSettings_size:		{}
	*/
            //	CHILD/NESTED LAYOUTS
            ,	
            childOptions:			null		// Layout-options for nested/child layout - even {} is valid as options
            ,	
            initChildLayout:		true		// true = child layout will be created as soon as _this_ layout completes initialization
            ,	
            destroyChildLayout:		true		// true = destroy child-layout if this pane is destroyed
            ,	
            resizeChildLayout:		true		// true = trigger child-layout.resizeAll() when this pane is resized
            //	PANE CALLBACKS
            ,	
            triggerEventsOnLoad:	false		// true = trigger onopen OR onclose callbacks when layout initializes
            ,	
            triggerEventsDuringLiveResize: true	// true = trigger onresize callback REPEATEDLY if livePaneResizing==true
            ,	
            onshow_start:			null		// CALLBACK when pane STARTS to Show	- BEFORE onopen/onhide_start
            ,	
            onshow_end:				null		// CALLBACK when pane ENDS being Shown	- AFTER  onopen/onhide_end
            ,	
            onhide_start:			null		// CALLBACK when pane STARTS to Close	- BEFORE onclose_start
            ,	
            onhide_end:				null		// CALLBACK when pane ENDS being Closed	- AFTER  onclose_end
            ,	
            onopen_start:			null		// CALLBACK when pane STARTS to Open
            ,	
            onopen_end:				null		// CALLBACK when pane ENDS being Opened
            ,	
            onclose_start:			null		// CALLBACK when pane STARTS to Close
            ,	
            onclose_end:			null		// CALLBACK when pane ENDS being Closed
            ,	
            onresize_start:			null		// CALLBACK when pane STARTS being Resized ***FOR ANY REASON***
            ,	
            onresize_end:			null		// CALLBACK when pane ENDS being Resized ***FOR ANY REASON***
            ,	
            onsizecontent_start:	null		// CALLBACK when sizing of content-element STARTS
            ,	
            onsizecontent_end:		null		// CALLBACK when sizing of content-element ENDS
            ,	
            onswap_start:			null		// CALLBACK when pane STARTS to Swap
            ,	
            onswap_end:				null		// CALLBACK when pane ENDS being Swapped
            ,	
            ondrag_start:			null		// CALLBACK when pane STARTS being ***MANUALLY*** Resized
            ,	
            ondrag_end:				null		// CALLBACK when pane ENDS being ***MANUALLY*** Resized
        }
        /*
 *	PANE-SPECIFIC SETTINGS
 *	- options listed below MUST be specified per-pane - they CANNOT be set under 'panes'
 *	- all options under the 'panes' key can also be set specifically for any pane
 *	- most options under the 'panes' key apply only to 'border-panes' - NOT the the center-pane
 */
        ,	
        north: {
            paneSelector:			".ui-layout-north"
            ,	
            size:					"auto"		// eg: "auto", "30%", .30, 200
            ,	
            resizerCursor:			"n-resize"	// custom = url(myCursor.cur)
            ,	
            customHotkey:			""			// EITHER a charCode (43) OR a character ("o")
        }
        ,	
        south: {
            paneSelector:			".ui-layout-south"
            ,	
            size:					"auto"
            ,	
            resizerCursor:			"s-resize"
            ,	
            customHotkey:			""
        }
        ,	
        east: {
            paneSelector:			".ui-layout-east"
            ,	
            size:					200
            ,	
            resizerCursor:			"e-resize"
            ,	
            customHotkey:			""
        }
        ,	
        west: {
            paneSelector:			".ui-layout-west"
            ,	
            size:					200
            ,	
            resizerCursor:			"w-resize"
            ,	
            customHotkey:			""
        }
        ,	
        center: {
            paneSelector:			".ui-layout-center"
            ,	
            minWidth:				0
            ,	
            minHeight:				0
        }
    };

    $.layout.optionsMap = {
        // layout/global options - NOT pane-options
        layout: ("stateManagement,effects,zIndexes,"
            +	"name,zIndex,scrollToBookmarkOnLoad,showErrorMessages,"
            +	"resizeWithWindow,resizeWithWindowDelay,resizeWithWindowMaxDelay,"
            +	"onresizeall,onresizeall_start,onresizeall_end,onload,onunload,autoBindCustomButtons").split(",")
        //	borderPanes: [ ALL options that are NOT specified as 'layout' ]
        // default.panes options that apply to the center-pane (most options apply _only_ to border-panes)
        ,	
        center: ("paneClass,contentSelector,contentIgnoreSelector,findNestedContent,applyDemoStyles,triggerEventsOnLoad,"
            +	"showOverflowOnHover,maskContents,maskObjects,liveContentResizing,"
            +	"childOptions,initChildLayout,resizeChildLayout,destroyChildLayout,"
            +	"onresize,onresize_start,onresize_end,onsizecontent,onsizecontent_start,onsizecontent_end").split(",")
        // options that MUST be specifically set 'per-pane' - CANNOT set in the panes (defaults) key
        ,	
        noDefault: ("paneSelector,resizerCursor,customHotkey").split(",")
    };

    /**
 * Processes options passed in converts flat-format data into subkey (JSON) format
 * In flat-format, subkeys are _currently_ separated with 2 underscores, like north__optName
 * Plugins may also call this method so they can transform their own data
 *
 * @param  {!Object}	hash	Data/options passed by user - may be a single level or nested levels
 * @return {Object}				Returns hash of minWidth & minHeight
 */
    $.layout.transformData = function (hash) {
        var	json = {
            panes: {}, 
            center: {}
    } // init return object
    ,	data, branch, optKey, keys, key, val, i, c;

    if (typeof hash !== "object") return json; // no options passed

    // convert all 'flat-keys' to 'sub-key' format
    for (optKey in hash) {
        branch	= json;
        data	= $.layout.optionsMap.layout;
        val		= hash[ optKey ];
        keys	= optKey.split("__"); // eg: west__size or north__fxSettings__duration
        c		= keys.length - 1;
        // convert underscore-delimited to subkeys
        for (i=0; i <= c; i++) {
            key = keys[i];
            if (i === c)
                branch[key] = val;
            else if (!branch[key])
                branch[key] = {}; // create the subkey
            // recurse to sub-key for next loop - if not done
            branch = branch[key];
        }
    }

    return json;
}

// INTERNAL CONFIG DATA - DO NOT CHANGE THIS!
$.layout.backwardCompatibility = {
    // data used by renameOldOptions()
    map: {
        //	OLD Option Name:			NEW Option Name
        applyDefaultStyles:			"applyDemoStyles"
        ,	
        resizeNestedLayout:			"resizeChildLayout"
        ,	
        resizeWhileDragging:		"livePaneResizing"
        ,	
        resizeContentWhileDragging:	"liveContentResizing"
        ,	
        triggerEventsWhileDragging:	"triggerEventsDuringLiveResize"
        ,	
        maskIframesOnResize:		"maskContents"
        ,	
        useStateCookie:				"stateManagement.enabled"
        ,	
        "cookie.autoLoad":			"stateManagement.autoLoad"
        ,	
        "cookie.autoSave":			"stateManagement.autoSave"
        ,	
        "cookie.keys":				"stateManagement.stateKeys"
        ,	
        "cookie.name":				"stateManagement.cookie.name"
        ,	
        "cookie.domain":			"stateManagement.cookie.domain"
        ,	
        "cookie.path":				"stateManagement.cookie.path"
        ,	
        "cookie.expires":			"stateManagement.cookie.expires"
        ,	
        "cookie.secure":			"stateManagement.cookie.secure"
    }
    /**
	* @param {Object}	opts
	*/
    ,	
    renameOptions: function (opts) {
        var map = $.layout.backwardCompatibility.map
        ,	oldData, newData, value
        ;
        for (var itemPath in map) {
            oldData	= getBranch( itemPath );
            value	= oldData.branch[ oldData.key ]
            if (value !== undefined) {
                newData = getBranch( map[itemPath], true )
                newData.branch[ newData.key ] = value;
                delete oldData.branch[ oldData.key ];
            }
        }

        /**
		* @param {string}	path
		* @param {boolean=}	[create=false]	Create path if does not exist
		*/
        function getBranch (path, create) {
            var a = path.split(".") // split keys into array
            ,	c = a.length - 1
            ,	D = {
                branch: opts, 
                key: a[c]
            } // init branch at top & set key (last item)
            ,	i = 0, k, undef;
            for (; i<c; i++) { // skip the last key (data)
                k = a[i];
                if (D.branch[ k ] == undefined) { // child-key does not exist
                    if (create) {
                        D.branch = D.branch[ k ] = {}; // create child-branch
                    }
                    else // can't go any farther
                        D.branch = {}; // branch is undefined
                }
                else
                    D.branch = D.branch[ k ]; // get child-branch
            }
            return D;
        };
    }
    /**
	* @param {Object}	opts
	*/
    ,	
    renameAllOptions: function (opts) {
        var ren = $.layout.backwardCompatibility.renameOptions;
        // rename root (layout) options
        ren( opts );
        // rename 'defaults' to 'panes'
        if (opts.defaults) {
            if (typeof opts.panes !== "object")
                opts.panes = {};
            $.extend(true, opts.panes, opts.defaults);
            delete opts.defaults;
        }
        // rename options in the the options.panes key
        if (opts.panes) ren( opts.panes );
        // rename options inside *each pane key*, eg: options.west
        $.each($.layout.config.allPanes, function (i, pane) {
            if (opts[pane]) ren( opts[pane] );
        });	
        return opts;
    }
};



/*	============================================================
 *	BEGIN WIDGET: $( selector ).layout( {options} );
 *	============================================================
 */
$.fn.layout = function (opts) {
    var

    // local aliases to global data
    browser	= $.layout.browser
    ,	lang	= $.layout.language // internal alias
    ,	_c		= $.layout.config

    // local aliases to utlity methods
    ,	cssW	= $.layout.cssWidth
    ,	cssH	= $.layout.cssHeight
    ,	elDims	= $.layout.getElementDimensions
    ,	elCSS	= $.layout.getElementCSS
    ,	evtObj	= $.layout.getEventObject
    ,	evtPane	= $.layout.parsePaneName

    /**
 * options - populated by initOptions()
 */
    ,	options = $.extend(true, {}, $.layout.defaults)
    ,	effects	= options.effects = $.extend(true, {}, $.layout.effects)

    /**
 * layout-state object
 */
    ,	state = {
        // generate unique ID to use for event.namespace so can unbind only events added by 'this layout'
        id:			"layout"+ $.now()	// code uses alias: sID
        ,	
        initialized: false
        ,	
        container:	{} // init all keys
        ,	
        north:		{}
        ,	
        south:		{}
        ,	
        east:		{}
        ,	
        west:		{}
        ,	
        center:		{}
    }

    /**
 * parent/child-layout pointers
 */
    //,	hasParentLayout	= false	- exists ONLY inside Instance so can be set externally
    ,	children = {
        north:		null
        ,	
        south:		null
        ,	
        east:		null
        ,	
        west:		null
        ,	
        center:		null
    }

    /*
 * ###########################
 *  INTERNAL HELPER FUNCTIONS
 * ###########################
 */

    /**
	* Manages all internal timers
	*/
    ,	timer = {
        data:	{}
        ,	
        set:	function (s, fn, ms) {
            timer.clear(s);
            timer.data[s] = setTimeout(fn, ms);
        }
        ,	
        clear:	function (s) {
            var t=timer.data;
            if (t[s]) {
                clearTimeout(t[s]);
                delete t[s];
            }
        }
}

,	_log = function (msg, popup) {
    $.layout.msg( options.name +' / '+ msg, (popup && options.showErrorMessages) );
}

/**
	* Executes a Callback function after a trigger event, like resize, open or close
	*
	* @param {string}	evtName			Name of the layout callback, eg "onresize_start"
	* @param {?string}	pane			This is passed only so we can pass the 'pane object' to the callback
	* @param {?boolean}	skipBoundEvents	Accepts a function name, OR a comma-delimited array: [0]=function name, [1]=argument
	*/
,	_runCallbacks = function (evtName, pane, skipBoundEvents) {
    var	o		= pane ? options[pane] : options
    // names like onopen and onopen_end separate are interchangeable in options...
    ,	lng	= evtName + (evtName.match(/_/) ? "" : "_end")
    ,	shrt	= lng.match(/_end$/) ? lng.substr(0, lng.length - 4) : ""
    ,	fn		= o[lng]
    ,	retVal	= "NC" // NC = No Callback
    ,	args	= []
    ;
    if (!fn && shrt)
        fn = o[shrt];

    // first trigger the callback set in the options
    if (fn) {
        //try {
        // convert function name (string) to function object
        if (isStr( fn )) {
            if (fn.match(/,/)) {
                // function name cannot contain a comma, 
                // so must be a function name AND a parameter to pass
                args = fn.split(",")
                ,	fn = eval(args[0]);
            }
            else // just the name of an external function?
                fn = eval(fn);
        }
        // execute the callback, if exists
        if ($.isFunction( fn )) {
            if (args.length)
                retVal = fn(args[1]); // pass the argument parsed from 'list'
            else if (pane && $Ps[pane])
                // pass data: pane-name, pane-element, pane-state, pane-options, and layout-name
                retVal = fn( pane, $Ps[pane], state[pane], options[pane], options.name );
            else // must be a layout/container callback - pass suitable info
                retVal = fn( Instance, state, options, options.name );
        }
    //}
    //catch (ex) {}
    }

    // trigger additional events bound directly to the pane
    if (!skipBoundEvents && retVal !== false) {
        if (pane) { // PANE events can be bound to each pane-elements
            $Ps[pane].triggerHandler('layoutpane'+ lng, [ pane, $Ps[pane], state[pane], options[pane], options.name ]);
            if (shrt)
                $Ps[pane].triggerHandler('layoutpane'+ shrt, [ pane, $Ps[pane], state[pane], options[pane], options.name ]);
        }
        else // LAYOUT events can be bound to the container-element
            $N.triggerHandler('layout'+ lng, [ pane, $Ps[pane], state[pane], options[pane], options.name ]);
    }

    // ALWAYS resizeChildLayout after a resize event - even during initialization
    if (evtName === "onresize_end" || evtName === "onsizecontent_end")
        resizeChildLayout(pane); 

    return retVal;
}


/**
	* cure iframe display issues in IE & other browsers
	*/
,	_fixIframe = function (pane) {
    if (browser.mozilla) return; // skip FireFox - it auto-refreshes iframes onShow
    var $P = $Ps[pane];
    // if the 'pane' is an iframe, do it
    if (state[pane].tagName === "IFRAME")
        $P.css(_c.hidden).css(_c.visible); 
    else // ditto for any iframes INSIDE the pane
        $P.find('IFRAME').css(_c.hidden).css(_c.visible);
}

/**
	* @param  {string}		pane		Can accept ONLY a 'pane' (east, west, etc)
	* @param  {number=}		outerSize	(optional) Can pass a width, allowing calculations BEFORE element is resized
	* @return {number}		Returns the innerHeight/Width of el by subtracting padding and borders
	*/
,	cssSize = function (pane, outerSize) {
    var fn = _c[pane].dir=="horz" ? cssH : cssW;
    return fn($Ps[pane], outerSize);
}

/**
	* @param  {string}		pane		Can accept ONLY a 'pane' (east, west, etc)
	* @return {Object}		Returns hash of minWidth & minHeight
	*/
,	cssMinDims = function (pane) {
    // minWidth/Height means CSS width/height = 1px
    var	$P	= $Ps[pane]
    ,	dir	= _c[pane].dir
    ,	d	= {
        minWidth:	1001 - cssW($P, 1000)
        ,	
        minHeight:	1001 - cssH($P, 1000)
    }
    ;
    if (dir === "horz") d.minSize = d.minHeight;
    if (dir === "vert") d.minSize = d.minWidth;
    return d;
}

// TODO: see if these methods can be made more useful...
// TODO: *maybe* return cssW/H from these so caller can use this info

/**
	* @param {(string|!Object)}		el
	* @param {number=}				outerWidth
	* @param {boolean=}				[autoHide=false]
	*/
,	setOuterWidth = function (el, outerWidth, autoHide) {
    var $E = el, w;
    if (isStr(el)) $E = $Ps[el]; // west
    else if (!el.jquery) $E = $(el);
    w = cssW($E, outerWidth);
    $E.css({
        width: w
    });
    if (w > 0) {
        if (autoHide && $E.data('autoHidden') && $E.innerHeight() > 0) {
            $E.show().data('autoHidden', false);
            if (!browser.mozilla) // FireFox refreshes iframes - IE does not
                // make hidden, then visible to 'refresh' display after animation
                $E.css(_c.hidden).css(_c.visible);
        }
    }
    else if (autoHide && !$E.data('autoHidden'))
        $E.hide().data('autoHidden', true);
}

/**
	* @param {(string|!Object)}		el
	* @param {number=}				outerHeight
	* @param {boolean=}				[autoHide=false]
	*/
,	setOuterHeight = function (el, outerHeight, autoHide) {
    var $E = el, h;
    if (isStr(el)) $E = $Ps[el]; // west
    else if (!el.jquery) $E = $(el);
    h = cssH($E, outerHeight);
    $E.css({
        height: h, 
        visibility: "visible"
    }); // may have been 'hidden' by sizeContent
    if (h > 0 && $E.innerWidth() > 0) {
        if (autoHide && $E.data('autoHidden')) {
            $E.show().data('autoHidden', false);
            if (!browser.mozilla) // FireFox refreshes iframes - IE does not
                $E.css(_c.hidden).css(_c.visible);
        }
    }
    else if (autoHide && !$E.data('autoHidden'))
        $E.hide().data('autoHidden', true);
}

/**
	* @param {(string|!Object)}		el
	* @param {number=}				outerSize
	* @param {boolean=}				[autoHide=false]
	*/
,	setOuterSize = function (el, outerSize, autoHide) {
    if (_c[pane].dir=="horz") // pane = north or south
        setOuterHeight(el, outerSize, autoHide);
    else // pane = east or west
        setOuterWidth(el, outerSize, autoHide);
}


/**
	* Converts any 'size' params to a pixel/integer size, if not already
	* If 'auto' or a decimal/percentage is passed as 'size', a pixel-size is calculated
	*
	/**
	* @param  {string}				pane
	* @param  {(string|number)=}	size
	* @param  {string=}				[dir]
	* @return {number}
	*/
,	_parseSize = function (pane, size, dir) {
    if (!dir) dir = _c[pane].dir;

    if (isStr(size) && size.match(/%/))
        size = (size === '100%') ? -1 : parseInt(size, 10) / 100; // convert % to decimal

    if (size === 0)
        return 0;
    else if (size >= 1)
        return parseInt(size, 10);

    var o = options, avail = 0;
    if (dir=="horz") // north or south or center.minHeight
        avail = sC.innerHeight - ($Ps.north ? o.north.spacing_open : 0) - ($Ps.south ? o.south.spacing_open : 0);
    else if (dir=="vert") // east or west or center.minWidth
        avail = sC.innerWidth - ($Ps.west ? o.west.spacing_open : 0) - ($Ps.east ? o.east.spacing_open : 0);

    if (size === -1) // -1 == 100%
        return avail;
    else if (size > 0) // percentage, eg: .25
        return round(avail * size);
    else if (pane=="center")
        return 0;
    else { // size < 0 || size=='auto' || size==Missing || size==Invalid
        // auto-size the pane
        var	dim	= (dir === "horz" ? "height" : "width")
        ,	$P	= $Ps[pane]
        ,	$C	= dim === 'height' ? $Cs[pane] : false
        ,	vis	= $.layout.showInvisibly($P) // show pane invisibly if hidden
        ,	szP	= $P.css(dim) // SAVE current pane size
        ,	szC	= $C ? $C.css(dim) : 0 // SAVE current content size
        ;
        $P.css(dim, "auto");
        if ($C) $C.css(dim, "auto");
        size = (dim === "height") ? $P.outerHeight() : $P.outerWidth(); // MEASURE
        $P.css(dim, szP).css(vis); // RESET size & visibility
        if ($C) $C.css(dim, szC);
        return size;
    }
}

/**
	* Calculates current 'size' (outer-width or outer-height) of a border-pane - optionally with 'pane-spacing' added
	*
	* @param  {(string|!Object)}	pane
	* @param  {boolean=}			[inclSpace=false]
	* @return {number}				Returns EITHER Width for east/west panes OR Height for north/south panes - adjusted for boxModel & browser
	*/
,	getPaneSize = function (pane, inclSpace) {
    var 
    $P	= $Ps[pane]
    ,	o	= options[pane]
    ,	s	= state[pane]
    ,	oSp	= (inclSpace ? o.spacing_open : 0)
    ,	cSp	= (inclSpace ? o.spacing_closed : 0)
    ;
    if (!$P || s.isHidden)
        return 0;
    else if (s.isClosed || (s.isSliding && inclSpace))
        return cSp;
    else if (_c[pane].dir === "horz")
        return $P.outerHeight() + oSp;
    else // dir === "vert"
        return $P.outerWidth() + oSp;
}

/**
	* Calculate min/max pane dimensions and limits for resizing
	*
	* @param  {string}		pane
	* @param  {boolean=}	[slide=false]
	*/
,	setSizeLimits = function (pane, slide) {
    if (!isInitialized()) return;
    var 
    o				= options[pane]
    ,	s				= state[pane]
    ,	c				= _c[pane]
    ,	dir				= c.dir
    ,	side			= c.side.toLowerCase()
    ,	type			= c.sizeType.toLowerCase()
    ,	isSliding		= (slide != undefined ? slide : s.isSliding) // only open() passes 'slide' param
    ,	$P				= $Ps[pane]
    ,	paneSpacing		= o.spacing_open
    //	measure the pane on the *opposite side* from this pane
    ,	altPane			= _c.oppositeEdge[pane]
    ,	altS			= state[altPane]
    ,	$altP			= $Ps[altPane]
    ,	altPaneSize		= (!$altP || altS.isVisible===false || altS.isSliding ? 0 : (dir=="horz" ? $altP.outerHeight() : $altP.outerWidth()))
    ,	altPaneSpacing	= ((!$altP || altS.isHidden ? 0 : options[altPane][ altS.isClosed !== false ? "spacing_closed" : "spacing_open" ]) || 0)
    //	limitSize prevents this pane from 'overlapping' opposite pane
    ,	containerSize	= (dir=="horz" ? sC.innerHeight : sC.innerWidth)
    ,	minCenterDims	= cssMinDims("center")
    ,	minCenterSize	= dir=="horz" ? max(options.center.minHeight, minCenterDims.minHeight) : max(options.center.minWidth, minCenterDims.minWidth)
    //	if pane is 'sliding', then ignore center and alt-pane sizes - because 'overlays' them
    ,	limitSize		= (containerSize - paneSpacing - (isSliding ? 0 : (_parseSize("center", minCenterSize, dir) + altPaneSize + altPaneSpacing)))
    ,	minSize			= s.minSize = max( _parseSize(pane, o.minSize), cssMinDims(pane).minSize )
    ,	maxSize			= s.maxSize = min( (o.maxSize ? _parseSize(pane, o.maxSize) : 100000), limitSize )
    ,	r				= s.resizerPosition = {} // used to set resizing limits
    ,	top				= sC.insetTop
    ,	left			= sC.insetLeft
    ,	W				= sC.innerWidth
    ,	H				= sC.innerHeight
    ,	rW				= o.spacing_open // subtract resizer-width to get top/left position for south/east
    ;
    switch (pane) {
        case "north":
            r.min = top + minSize;
            r.max = top + maxSize;
            break;
        case "west":
            r.min = left + minSize;
            r.max = left + maxSize;
            break;
        case "south":
            r.min = top + H - maxSize - rW;
            r.max = top + H - minSize - rW;
            break;
        case "east":
            r.min = left + W - maxSize - rW;
            r.max = left + W - minSize - rW;
            break;
    };
}

/**
	* Returns data for setting the size/position of center pane. Also used to set Height for east/west panes
	*
	* @return JSON  Returns a hash of all dimensions: top, bottom, left, right, (outer) width and (outer) height
	*/
,	calcNewCenterPaneDims = function () {
    var d = {
        top:	getPaneSize("north", true) // true = include 'spacing' value for pane
        ,	
        bottom:	getPaneSize("south", true)
        ,	
        left:	getPaneSize("west", true)
        ,	
        right:	getPaneSize("east", true)
        ,	
        width:	0
        ,	
        height:	0
    };

    // NOTE: sC = state.container
    // calc center-pane outer dimensions
    d.width		= sC.innerWidth - d.left - d.right;  // outerWidth
    d.height	= sC.innerHeight - d.bottom - d.top; // outerHeight
    // add the 'container border/padding' to get final positions relative to the container
    d.top		+= sC.insetTop;
    d.bottom	+= sC.insetBottom;
    d.left		+= sC.insetLeft;
    d.right		+= sC.insetRight;

    return d;
}


/**
	* @param {!Object}		el
	* @param {boolean=}		[allStates=false]
	*/
,	getHoverClasses = function (el, allStates) {
    var
    $El		= $(el)
    ,	type	= $El.data("layoutRole")
    ,	pane	= $El.data("layoutEdge")
    ,	o		= options[pane]
    ,	root	= o[type +"Class"]
    ,	_pane	= "-"+ pane // eg: "-west"
    ,	_open	= "-open"
    ,	_closed	= "-closed"
    ,	_slide	= "-sliding"
    ,	_hover	= "-hover " // NOTE the trailing space
    ,	_state	= $El.hasClass(root+_closed) ? _closed : _open
    ,	_alt	= _state === _closed ? _open : _closed
    ,	classes = (root+_hover) + (root+_pane+_hover) + (root+_state+_hover) + (root+_pane+_state+_hover)
    ;
    if (allStates) // when 'removing' classes, also remove alternate-state classes
        classes += (root+_alt+_hover) + (root+_pane+_alt+_hover);

    if (type=="resizer" && $El.hasClass(root+_slide))
        classes += (root+_slide+_hover) + (root+_pane+_slide+_hover);

    return $.trim(classes);
}
,	addHover	= function (evt, el) {
    var $E = $(el || this);
    if (evt && $E.data("layoutRole") === "toggler")
        evt.stopPropagation(); // prevent triggering 'slide' on Resizer-bar
    $E.addClass( getHoverClasses($E) );
}
,	removeHover	= function (evt, el) {
    var $E = $(el || this);
    $E.removeClass( getHoverClasses($E, true) );
}

,	onResizerEnter	= function (evt) { // ALSO called by toggler.mouseenter
    if ($.fn.disableSelection)
        $("body").disableSelection();
}
,	onResizerLeave	= function (evt, el) {
    var
    e = el || this // el is only passed when called by the timer
    ,	pane = $(e).data("layoutEdge")
    ,	name = pane +"ResizerLeave"
    ;
    timer.clear(pane+"_openSlider"); // cancel slideOpen timer, if set
    timer.clear(name); // cancel enableSelection timer - may re/set below
    // this method calls itself on a timer because it needs to allow
    // enough time for dragging to kick-in and set the isResizing flag
    // dragging has a 100ms delay set, so this delay must be >100
    if (!el) // 1st call - mouseleave event
        timer.set(name, function(){
            onResizerLeave(evt, e);
        }, 200);
    // if user is resizing, then dragStop will enableSelection(), so can skip it here
    else if (!state[pane].isResizing && $.fn.enableSelection) // 2nd call - by timer
        $("body").enableSelection();
}

/*
 * ###########################
 *   INITIALIZATION METHODS
 * ###########################
 */

/**
	* Initialize the layout - called automatically whenever an instance of layout is created
	*
	* @see  none - triggered onInit
	* @return  mixed	true = fully initialized | false = panes not initialized (yet) | 'cancel' = abort
	*/
,	_create = function () {
    // initialize config/options
    initOptions();
    var o = options;

    // TEMP state so isInitialized returns true during init process
    state.creatingLayout = true;

    // init plugins for this layout, if there are any (eg: stateManagement)
    runPluginCallbacks( Instance, $.layout.onCreate );

    // options & state have been initialized, so now run beforeLoad callback
    // onload will CANCEL layout creation if it returns false
    if (false === _runCallbacks("onload_start"))
        return 'cancel';

    // initialize the container element
    _initContainer();

    // bind hotkey function - keyDown - if required
    initHotkeys();

    // bind window.onunload
    $(window).bind("unload."+ sID, unload);

    // init plugins for this layout, if there are any (eg: customButtons)
    runPluginCallbacks( Instance, $.layout.onLoad );

    // if layout elements are hidden, then layout WILL NOT complete initialization!
    // initLayoutElements will set initialized=true and run the onload callback IF successful
    if (o.initPanes) _initLayoutElements();

    delete state.creatingLayout;

    return state.initialized;
}

/**
	* Initialize the layout IF not already
	*
	* @see  All methods in Instance run this test
	* @return  boolean	true = layoutElements have been initialized | false = panes are not initialized (yet)
	*/
,	isInitialized = function () {
    if (state.initialized || state.creatingLayout) return true;	// already initialized
    else return _initLayoutElements();	// try to init panes NOW
}

/**
	* Initialize the layout - called automatically whenever an instance of layout is created
	*
	* @see  _create() & isInitialized
	* @return  An object pointer to the instance created
	*/
,	_initLayoutElements = function (retry) {
    // initialize config/options
    var o = options;

    // CANNOT init panes inside a hidden container!
    if (!$N.is(":visible")) {
        // handle Chrome bug where popup window 'has no height'
        // if layout is BODY element, try again in 50ms
        // SEE: http://layout.jquery-dev.net/samples/test_popup_window.html
        if ( !retry && browser.webkit && $N[0].tagName === "BODY" )
            setTimeout(function(){
                _initLayoutElements(true);
            }, 50);
        return false;
    }

    // a center pane is required, so make sure it exists
    if (!getPane("center").length) {
        if (options.showErrorMessages)
            _log( lang.errCenterPaneMissing, true );
        return false;
    }

    // TEMP state so isInitialized returns true during init process
    state.creatingLayout = true;

    // update Container dims
    $.extend(sC, elDims( $N ));

    // initialize all layout elements
    initPanes();	// size & position panes - calls initHandles() - which calls initResizable()

    if (o.scrollToBookmarkOnLoad) {
        var l = self.location;
        if (l.hash) l.replace( l.hash ); // scrollTo Bookmark
    }

    // check to see if this layout 'nested' inside a pane
    if (Instance.hasParentLayout)
        o.resizeWithWindow = false;
    // bind resizeAll() for 'this layout instance' to window.resize event
    else if (o.resizeWithWindow)
        $(window).bind("resize."+ sID, windowResize);

    delete state.creatingLayout;
    state.initialized = true;

    // init plugins for this layout, if there are any
    runPluginCallbacks( Instance, $.layout.onReady );

    // now run the onload callback, if exists
    _runCallbacks("onload_end");

    return true; // elements initialized successfully
}

/**
	* Initialize nested layouts - called when _initLayoutElements completes
	*
	* NOT CURRENTLY USED
	*
	* @see _initLayoutElements
	* @return  An object pointer to the instance created
	*/
,	_initChildLayouts = function () {
    $.each(_c.allPanes, function (idx, pane) {
        if (options[pane].initChildLayout)
            createChildLayout( pane );
    });
}

/**
	* Initialize nested layouts for a specific pane - can optionally pass layout-options
	*
	* @see _initChildLayouts
	* @param {string}	pane		The pane being opened, ie: north, south, east, or west
	* @param {Object=}	[opts]		Layout-options - if passed, will OVERRRIDE options[pane].childOptions
	* @return  An object pointer to the layout instance created - or null
	*/
,	createChildLayout = function (evt_or_pane, opts) {
    var	pane = evtPane.call(this, evt_or_pane)
    ,	$P	= $Ps[pane]
    ,	C	= children
    ;
    if ($P) {
        var	$C	= $Cs[pane]
        ,	o	= opts || options[pane].childOptions
        ,	d	= "layout"
        //	determine which element is supposed to be the 'child container'
        //	if pane has a 'containerSelector' OR a 'content-div', use those instead of the pane
        ,	$Cont = o.containerSelector ? $P.find( o.containerSelector ) : ($C || $P)
        ,	containerFound = $Cont.length
        //	see if a child-layout ALREADY exists on this element
        ,	child = containerFound ? (C[pane] = $Cont.data(d) || null) : null
        ;
        // if no layout exists, but childOptions are set, try to create the layout now
        if (!child && containerFound && o)
            child = C[pane] = $Cont.eq(0).layout(o) || null;
        if (child)
            child.hasParentLayout = true;	// set parent-flag in child
    }
    Instance[pane].child = C[pane]; // ALWAYS set pane-object pointer, even if null
}

,	windowResize = function () {
    var delay = Number(options.resizeWithWindowDelay);
    if (delay < 10) delay = 100; // MUST have a delay!
    // resizing uses a delay-loop because the resize event fires repeatly - except in FF, but delay anyway
    timer.clear("winResize"); // if already running
    timer.set("winResize", function(){
        timer.clear("winResize");
        timer.clear("winResizeRepeater");
        var dims = elDims( $N );
        // only trigger resizeAll() if container has changed size
        if (dims.innerWidth !== sC.innerWidth || dims.innerHeight !== sC.innerHeight)
            resizeAll();
    }, delay);
    // ALSO set fixed-delay timer, if not already running
    if (!timer.data["winResizeRepeater"]) setWindowResizeRepeater();
}

,	setWindowResizeRepeater = function () {
    var delay = Number(options.resizeWithWindowMaxDelay);
    if (delay > 0)
        timer.set("winResizeRepeater", function(){
            setWindowResizeRepeater();
            resizeAll();
        }, delay);
}

,	unload = function () {
    var o = options;

    _runCallbacks("onunload_start");

    // trigger plugin callabacks for this layout (eg: stateManagement)
    runPluginCallbacks( Instance, $.layout.onUnload );

    _runCallbacks("onunload_end");
}

/**
	* Validate and initialize container CSS and events
	*
	* @see  _create()
	*/
,	_initContainer = function () {
    var
    N		= $N[0]
    ,	tag		= sC.tagName = N.tagName
    ,	id		= sC.id = N.id
    ,	cls		= sC.className = N.className
    ,	o		= options
    ,	name	= o.name
    ,	fullPage= (tag === "BODY")
    ,	props	= "overflow,position,margin,padding,border"
    ,	css		= "layoutCSS"
    ,	CSS		= {}
    ,	hid		= "hidden" // used A LOT!
    //	see if this container is a 'pane' inside an outer-layout
    ,	parent	= $N.data("parentLayout")	// parent-layout Instance
    ,	pane	= $N.data("layoutEdge")		// pane-name in parent-layout
    ,	isChild	= parent && pane
    ;
    // sC -> state.container
    sC.selector = $N.selector.split(".slice")[0];
    sC.ref		= (o.name ? o.name +' layout / ' : '') + tag + (id ? "#"+id : cls ? '.['+cls+']' : ''); // used in messages

    $N	.data({
        layout: Instance
        ,	
        layoutContainer: sID // FLAG to indicate this is a layout-container - contains unique internal ID
    })
    .addClass(o.containerClass)
    ;
    var layoutMethods = {
        destroy:	''
        ,	
        initPanes:	''
        ,	
        resizeAll:	'resizeAll'
        ,	
        resize:		'resizeAll'
    }
    ,	name;
    // loop hash and bind all methods - include layoutID namespacing
    for (name in layoutMethods) {
        $N.bind("layout"+ name.toLowerCase() +"."+ sID, Instance[ layoutMethods[name] || name ]);
    }

    // if this container is another layout's 'pane', then set child/parent pointers
    if (isChild) {
        // update parent flag
        Instance.hasParentLayout = true;
        // set pointers to THIS child-layout (Instance) in parent-layout
        // NOTE: parent.PANE.child is an ALIAS to parent.children.PANE
        parent[pane].child = parent.children[pane] = $N.data("layout");
    }

    // SAVE original container CSS for use in destroy()
    if (!$N.data(css)) {
        // handle props like overflow different for BODY & HTML - has 'system default' values
        if (fullPage) {
            CSS = $.extend( elCSS($N, props), {
                height:		$N.css("height")
                ,	
                overflow:	$N.css("overflow")
                ,	
                overflowX:	$N.css("overflowX")
                ,	
                overflowY:	$N.css("overflowY")
            });
            // ALSO SAVE <HTML> CSS
            var $H = $("html");
            $H.data(css, {
                height:		"auto" // FF would return a fixed px-size!
                ,	
                overflow:	$H.css("overflow")
                ,	
                overflowX:	$H.css("overflowX")
                ,	
                overflowY:	$H.css("overflowY")
            });
        }
        else // handle props normally for non-body elements
            CSS = elCSS($N, props+",top,bottom,left,right,width,height,overflow,overflowX,overflowY");

        $N.data(css, CSS);
    }

    try { // format html/body if this is a full page layout
        if (fullPage) {
            $("html").css({
                height:		"100%"
                ,	
                overflow:	hid
                ,	
                overflowX:	hid
                ,	
                overflowY:	hid
            });
            $("body").css({
                position:	"relative"
                ,	
                height:		"100%"
                ,	
                overflow:	hid
                ,	
                overflowX:	hid
                ,	
                overflowY:	hid
                ,	
                margin:		0
                ,	
                padding:	0		// TODO: test whether body-padding could be handled?
                ,	
                border:		"none"	// a body-border creates problems because it cannot be measured!
            });

            // set current layout-container dimensions
            $.extend(sC, elDims( $N ));
        }
        else { // set required CSS for overflow and position
            // ENSURE container will not 'scroll'
            CSS = {
                overflow: hid, 
                overflowX: hid, 
                overflowY: hid
            }
            var
            p = $N.css("position")
            ,	h = $N.css("height")
            ;
            // if this is a NESTED layout, then container/outer-pane ALREADY has position and height
            if (!isChild) {
                if (!p || !p.match(/fixed|absolute|relative/))
                    CSS.position = "relative"; // container MUST have a 'position'
            /*
					if (!h || h=="auto")
						CSS.height = "100%"; // container MUST have a 'height'
					*/
            }
            $N.css( CSS );

            // set current layout-container dimensions
            if ( $N.is(":visible") ) {
                $.extend(sC, elDims( $N ));
                if (o.showErrorMessages && sC.innerHeight < 1)
                    _log( lang.errContainerHeight.replace(/CONTAINER/, sC.ref), true );
            }
        }
    } catch (ex) {}
}

/**
	* Bind layout hotkeys - if options enabled
	*
	* @see  _create() and addPane()
	* @param {string=}	[panes=""]	The edge(s) to process
	*/
,	initHotkeys = function (panes) {
    panes = panes ? panes.split(",") : _c.borderPanes;
    // bind keyDown to capture hotkeys, if option enabled for ANY pane
    $.each(panes, function (i, pane) {
        var o = options[pane];
        if (o.enableCursorHotkey || o.customHotkey) {
            $(document).bind("keydown."+ sID, keyDown); // only need to bind this ONCE
            return false; // BREAK - binding was done
        }
    });
}

/**
	* Build final OPTIONS data
	*
	* @see  _create()
	*/
,	initOptions = function () {
    var data, d, pane, key, val, i, c, o;

    // reprocess user's layout-options to have correct options sub-key structure
    opts = $.layout.transformData( opts ); // panes = default subkey

    // auto-rename old options for backward compatibility
    opts = $.layout.backwardCompatibility.renameAllOptions( opts );

    // if user-options has 'panes' key (pane-defaults), process it...
    if (!$.isEmptyObject(opts.panes)) {
        // REMOVE any pane-defaults that MUST be set per-pane
        data = $.layout.optionsMap.noDefault;
        for (i=0, c=data.length; i<c; i++) {
            key = data[i];
            delete opts.panes[key]; // OK if does not exist
        }
        // REMOVE any layout-options specified under opts.panes
        data = $.layout.optionsMap.layout;
        for (i=0, c=data.length; i<c; i++) {
            key = data[i];
            delete opts.panes[key]; // OK if does not exist
        }
    }

    // MOVE any NON-layout-options to opts.panes
    data = $.layout.optionsMap.layout;
    var rootKeys = $.layout.config.optionRootKeys;
    for (key in opts) {
        val = opts[key];
        if ($.inArray(key, rootKeys) < 0 && $.inArray(key, data) < 0) {
            if (!opts.panes[key])
                opts.panes[key] = $.isPlainObject(val) ? $.extend(true, {}, val) : val;
            delete opts[key]
        }
    }

    // START by updating ALL options from opts
    $.extend(true, options, opts);

    // CREATE final options (and config) for EACH pane
    $.each(_c.allPanes, function (i, pane) {

        // apply 'pane-defaults' to CONFIG.[PANE]
        _c[pane] = $.extend( true, {}, _c.panes, _c[pane] );

        d = options.panes;
        o = options[pane];

        // center-pane uses SOME keys in defaults.panes branch
        if (pane === 'center') {
            // ONLY copy keys from opts.panes listed in: $.layout.optionsMap.center
            data = $.layout.optionsMap.center;		// list of 'center-pane keys'
            for (i=0, c=data.length; i<c; i++) {	// loop the list...
                key = data[i];
                // only need to use pane-default if pane-specific value not set
                if (!opts.center[key] && (opts.panes[key] || !o[key]))
                    o[key] = d[key]; // pane-default
            }
        }
        else {
            // border-panes use ALL keys in defaults.panes branch
            o = options[pane] = $.extend({}, d, o); // re-apply pane-specific opts AFTER pane-defaults
            createFxOptions( pane );
            // ensure all border-pane-specific base-classes exist
            if (!o.resizerClass)	o.resizerClass	= "ui-layout-resizer";
            if (!o.togglerClass)	o.togglerClass	= "ui-layout-toggler";
        }
        // ensure we have base pane-class (ALL panes)
        if (!o.paneClass) o.paneClass = "ui-layout-pane";
    });

    // update options.zIndexes if a zIndex-option specified
    var zo	= opts.zIndex
    ,	z	= options.zIndexes;
    if (zo > 0) {
        z.pane_normal		= zo;
        z.content_mask		= max(zo+1, z.content_mask);	// MIN = +1
        z.resizer_normal	= max(zo+2, z.resizer_normal);	// MIN = +2
    }

    function createFxOptions ( pane ) {
        var	o = options[pane]
        ,	d = options.panes;
        // ensure fxSettings key to avoid errors
        if (!o.fxSettings) o.fxSettings = {};
        if (!d.fxSettings) d.fxSettings = {};

        $.each(["_open","_close","_size"], function (i,n) { 
            var
            sName		= "fxName"+ n
            ,	sSpeed		= "fxSpeed"+ n
            ,	sSettings	= "fxSettings"+ n
            // recalculate fxName according to specificity rules
            ,	fxName = o[sName] =
            o[sName]	// options.west.fxName_open
            ||	d[sName]	// options.panes.fxName_open
            ||	o.fxName	// options.west.fxName
            ||	d.fxName	// options.panes.fxName
            ||	"none"		// MEANS $.layout.defaults.panes.fxName == "" || false || null || 0
            ;
            // validate fxName to ensure is valid effect - MUST have effect-config data in options.effects
            if (fxName === "none" || !$.effects || !$.effects[fxName] || !options.effects[fxName])
                fxName = o[sName] = "none"; // effect not loaded OR unrecognized fxName

            // set vars for effects subkeys to simplify logic
            var	fx		= options.effects[fxName] || {}	// effects.slide
            ,	fx_all	= fx.all	|| null				// effects.slide.all
            ,	fx_pane	= fx[pane]	|| null				// effects.slide.west
            ;
            // create fxSpeed[_open|_close|_size]
            o[sSpeed] =
            o[sSpeed]				// options.west.fxSpeed_open
            ||	d[sSpeed]				// options.west.fxSpeed_open
            ||	o.fxSpeed				// options.west.fxSpeed
            ||	d.fxSpeed				// options.panes.fxSpeed
            ||	null					// DEFAULT - let fxSetting.duration control speed
            ;
            // create fxSettings[_open|_close|_size]
            o[sSettings] = $.extend(
            {}
                ,	fx_all					// effects.slide.all
                ,	fx_pane					// effects.slide.west
                ,	d.fxSettings			// options.panes.fxSettings
                ,	o.fxSettings			// options.west.fxSettings
                ,	d[sSettings]			// options.panes.fxSettings_open
                ,	o[sSettings]			// options.west.fxSettings_open
                );
        });

        // DONE creating action-specific-settings for this pane,
        // so DELETE generic options - are no longer meaningful
        delete o.fxName;
        delete o.fxSpeed;
        delete o.fxSettings;
    }

    // DELETE 'panes' key now that we are done - values were copied to EACH pane
    delete options.panes;
}

/**
	* Initialize module objects, styling, size and position for all panes
	*
	* @see  _initElements()
	* @param {string}	pane		The pane to process
	*/
,	getPane = function (pane) {
    var sel = options[pane].paneSelector
    if (sel.substr(0,1)==="#") // ID selector
        // NOTE: elements selected 'by ID' DO NOT have to be 'children'
        return $N.find(sel).eq(0);
    else { // class or other selector
        var $P = $N.children(sel).eq(0);
        // look for the pane nested inside a 'form' element
        return $P.length ? $P : $N.children("form:first").children(sel).eq(0);
    }
}

,	initPanes = function () {
    // NOTE: do north & south FIRST so we can measure their height - do center LAST
    $.each(_c.allPanes, function (idx, pane) {
        addPane( pane, true );
    });

    // init the pane-handles NOW in case we have to hide or close the pane below
    initHandles();

    // now that all panes have been initialized and initially-sized,
    // make sure there is really enough space available for each pane
    $.each(_c.borderPanes, function (i, pane) {
        if ($Ps[pane] && state[pane].isVisible) { // pane is OPEN
            setSizeLimits(pane);
            makePaneFit(pane); // pane may be Closed, Hidden or Resized by makePaneFit()
        }
    });
    // size center-pane AGAIN in case we 'closed' a border-pane in loop above
    sizeMidPanes("center");

    //	Chrome/Webkit sometimes fires callbacks BEFORE it completes resizing!
    //	Before RC30.3, there was a 10ms delay here, but that caused layout 
    //	to load asynchrously, which is BAD, so try skipping delay for now

    // process pane contents and callbacks, and init/resize child-layout if exists
    $.each(_c.allPanes, function (i, pane) {
        var o = options[pane];
        if ($Ps[pane]) {
            if (state[pane].isVisible) { // pane is OPEN
                sizeContent(pane);
                // trigger pane.onResize if triggerEventsOnLoad = true
                if (o.triggerEventsOnLoad)
                    _runCallbacks("onresize_end", pane);
                else // automatic if onresize called, otherwise call it specifically
                    // resize child - IF inner-layout already exists (created before this layout)
                    resizeChildLayout(pane);
            }
            // init childLayout - even if pane is not visible
            if (o.initChildLayout && o.childOptions)
                createChildLayout(pane);
        }
    });
}

/**
	* Add a pane to the layout - subroutine of initPanes()
	*
	* @see  initPanes()
	* @param {string}	pane			The pane to process
	* @param {boolean=}	[force=false]	Size content after init
	*/
,	addPane = function (pane, force) {
    if (!force && !isInitialized()) return;
    var
    o		= options[pane]
    ,	s		= state[pane]
    ,	c		= _c[pane]
    ,	fx		= s.fx
    ,	dir		= c.dir
    ,	spacing	= o.spacing_open || 0
    ,	isCenter = (pane === "center")
    ,	CSS		= {}
    ,	$P		= $Ps[pane]
    ,	size, minSize, maxSize
    ;
    // if pane-pointer already exists, remove the old one first
    if ($P)
        removePane( pane, false, true, false );
    else
        $Cs[pane] = false; // init

    $P = $Ps[pane] = getPane(pane);
    if (!$P.length) {
        $Ps[pane] = false; // logic
        return;
    }

    // SAVE original Pane CSS
    if (!$P.data("layoutCSS")) {
        var props = "position,top,left,bottom,right,width,height,overflow,zIndex,display,backgroundColor,padding,margin,border";
        $P.data("layoutCSS", elCSS($P, props));
    }

    // create alias for pane data in Instance - initHandles will add more
    Instance[pane] = {
        name: pane, 
        pane: $Ps[pane], 
        content: $Cs[pane], 
        options: options[pane], 
        state: state[pane], 
        child: children[pane]
    };

    // add classes, attributes & events
    $P	.data({
        parentLayout:	Instance		// pointer to Layout Instance
        ,	
        layoutPane:		Instance[pane]	// NEW pointer to pane-alias-object
        ,	
        layoutEdge:		pane
        ,	
        layoutRole:		"pane"
    })
    .css(c.cssReq).css("zIndex", options.zIndexes.pane_normal)
    .css(o.applyDemoStyles ? c.cssDemo : {}) // demo styles
    .addClass( o.paneClass +" "+ o.paneClass+"-"+pane ) // default = "ui-layout-pane ui-layout-pane-west" - may be a dupe of 'paneSelector'
    .bind("mouseenter."+ sID, addHover )
    .bind("mouseleave."+ sID, removeHover )
    ;
    var paneMethods = {
        hide:				''
        ,	
        show:				''
        ,	
        toggle:				''
        ,	
        close:				''
        ,	
        open:				''
        ,	
        slideOpen:			''
        ,	
        slideClose:			''
        ,	
        slideToggle:		''
        ,	
        size:				'manualSizePane'
        ,	
        sizePane:			'manualSizePane'
        ,	
        sizeContent:		''
        ,	
        sizeHandles:		''
        ,	
        enableClosable:		''
        ,	
        disableClosable:	''
        ,	
        enableSlideable:	''
        ,	
        disableSlideable:	''
        ,	
        enableResizable:	''
        ,	
        disableResizable:	''
        ,	
        swapPanes:			'swapPanes'
        ,	
        swap:				'swapPanes'
        ,	
        move:				'swapPanes'
        ,	
        removePane:			'removePane'
        ,	
        remove:				'removePane'
        ,	
        createChildLayout:	''
        ,	
        resizeChildLayout:	''
        ,	
        resizeAll:			'resizeAll'
        ,	
        resizeLayout:		'resizeAll'
    }
    ,	name;
    // loop hash and bind all methods - include layoutID namespacing
    for (name in paneMethods) {
        $P.bind("layoutpane"+ name.toLowerCase() +"."+ sID, Instance[ paneMethods[name] || name ]);
    }

    // see if this pane has a 'scrolling-content element'
    initContent(pane, false); // false = do NOT sizeContent() - called later

    if (!isCenter) {
        // call _parseSize AFTER applying pane classes & styles - but before making visible (if hidden)
        // if o.size is auto or not valid, then MEASURE the pane and use that as its 'size'
        size	= s.size = _parseSize(pane, o.size);
        minSize	= _parseSize(pane,o.minSize) || 1;
        maxSize	= _parseSize(pane,o.maxSize) || 100000;
        if (size > 0) size = max(min(size, maxSize), minSize);

        // state for border-panes
        s.isClosed  = false; // true = pane is closed
        s.isSliding = false; // true = pane is currently open by 'sliding' over adjacent panes
        s.isResizing= false; // true = pane is in process of being resized
        s.isHidden	= false; // true = pane is hidden - no spacing, resizer or toggler is visible!

        // array for 'pin buttons' whose classNames are auto-updated on pane-open/-close
        if (!s.pins) s.pins = [];
    }
    //	states common to ALL panes
    s.tagName	= $P[0].tagName;
    s.edge		= pane;		// useful if pane is (or about to be) 'swapped' - easy find out where it is (or is going)
    s.noRoom	= false;	// true = pane 'automatically' hidden due to insufficient room - will unhide automatically
    s.isVisible	= true;		// false = pane is invisible - closed OR hidden - simplify logic

    // set css-position to account for container borders & padding
    switch (pane) {
        case "north":
            CSS.top 	= sC.insetTop;
            CSS.left 	= sC.insetLeft;
            CSS.right	= sC.insetRight;
            break;
        case "south":
            CSS.bottom	= sC.insetBottom;
            CSS.left 	= sC.insetLeft;
            CSS.right 	= sC.insetRight;
            break;
        case "west":
            CSS.left 	= sC.insetLeft; // top, bottom & height set by sizeMidPanes()
            break;
        case "east":
            CSS.right 	= sC.insetRight; // ditto
            break;
        case "center":	// top, left, width & height set by sizeMidPanes()
    }

    if (dir === "horz") // north or south pane
        CSS.height = cssH($P, size);
    else if (dir === "vert") // east or west pane
        CSS.width = cssW($P, size);
    //else if (isCenter) {}

    $P.css(CSS); // apply size -- top, bottom & height will be set by sizeMidPanes
    if (dir != "horz") sizeMidPanes(pane, true); // true = skipCallback

    // close or hide the pane if specified in settings
    if (o.initClosed && o.closable && !o.initHidden)
        close(pane, true, true); // true, true = force, noAnimation
    else if (o.initHidden || o.initClosed)
        hide(pane); // will be completely invisible - no resizer or spacing
    else if (!s.noRoom)
        // make the pane visible - in case was initially hidden
        $P.css("display","block");
    // ELSE setAsOpen() - called later by initHandles()

    // RESET visibility now - pane will appear IF display:block
    $P.css("visibility","visible");

    // check option for auto-handling of pop-ups & drop-downs
    if (o.showOverflowOnHover)
        $P.hover( allowOverflow, resetOverflow );

    // if manually adding a pane AFTER layout initialization, then...
    if (state.initialized) {
        initHandles( pane );
        initHotkeys( pane );
        resizeAll(); // will sizeContent if pane is visible
        if (s.isVisible) { // pane is OPEN
            if (o.triggerEventsOnLoad)
                _runCallbacks("onresize_end", pane);
            else // automatic if onresize called, otherwise call it specifically
                // resize child - IF inner-layout already exists (created before this layout)
                resizeChildLayout(pane); // a previously existing childLayout
        }
        if (o.initChildLayout && o.childOptions)
            createChildLayout(pane);
    }
}

/**
	* Initialize module objects, styling, size and position for all resize bars and toggler buttons
	*
	* @see  _create()
	* @param {string=}	[panes=""]	The edge(s) to process
	*/
,	initHandles = function (panes) {
    panes = panes ? panes.split(",") : _c.borderPanes;

    // create toggler DIVs for each pane, and set object pointers for them, eg: $R.north = north toggler DIV
    $.each(panes, function (i, pane) {
        var $P		= $Ps[pane];
        $Rs[pane]	= false; // INIT
        $Ts[pane]	= false;
        if (!$P) return; // pane does not exist - skip

        var 
        o		= options[pane]
        ,	s		= state[pane]
        ,	c		= _c[pane]
        ,	rClass	= o.resizerClass
        ,	tClass	= o.togglerClass
        ,	side	= c.side.toLowerCase()
        ,	spacing	= (s.isVisible ? o.spacing_open : o.spacing_closed)
        ,	_pane	= "-"+ pane // used for classNames
        ,	_state	= (s.isVisible ? "-open" : "-closed") // used for classNames
        ,	I		= Instance[pane]
        // INIT RESIZER BAR
        ,	$R		= I.resizer = $Rs[pane] = $("<div></div>")
        // INIT TOGGLER BUTTON
        ,	$T		= I.toggler = (o.closable ? $Ts[pane] = $("<div></div>") : false)
        ;

        //if (s.isVisible && o.resizable) ... handled by initResizable
        if (!s.isVisible && o.slidable)
            $R.attr("title", o.sliderTip).css("cursor", o.sliderCursor);

        $R	// if paneSelector is an ID, then create a matching ID for the resizer, eg: "#paneLeft" => "paneLeft-resizer"
        .attr("id", (o.paneSelector.substr(0,1)=="#" ? o.paneSelector.substr(1) + "-resizer" : ""))
        .data({
            parentLayout:	Instance
            ,	
            layoutPane:		Instance[pane]	// NEW pointer to pane-alias-object
            ,	
            layoutEdge:		pane
            ,	
            layoutRole:		"resizer"
        })
        .css(_c.resizers.cssReq).css("zIndex", options.zIndexes.resizer_normal)
        .css(o.applyDemoStyles ? _c.resizers.cssDemo : {}) // add demo styles
        .addClass(rClass +" "+ rClass+_pane)
        .hover(addHover, removeHover) // ALWAYS add hover-classes, even if resizing is not enabled - handle with CSS instead
        .hover(onResizerEnter, onResizerLeave) // ALWAYS NEED resizer.mouseleave to balance toggler.mouseenter
        .appendTo($N) // append DIV to container
        ;

        if ($T) {
            $T	// if paneSelector is an ID, then create a matching ID for the resizer, eg: "#paneLeft" => "#paneLeft-toggler"
            .attr("id", (o.paneSelector.substr(0,1)=="#" ? o.paneSelector.substr(1) + "-toggler" : ""))
            .data({
                parentLayout:	Instance
                ,	
                layoutPane:		Instance[pane]	// NEW pointer to pane-alias-object
                ,	
                layoutEdge:		pane
                ,	
                layoutRole:		"toggler"
            })
            .css(_c.togglers.cssReq) // add base/required styles
            .css(o.applyDemoStyles ? _c.togglers.cssDemo : {}) // add demo styles
            .addClass(tClass +" "+ tClass+_pane)
            .hover(addHover, removeHover) // ALWAYS add hover-classes, even if toggling is not enabled - handle with CSS instead
            .bind("mouseenter", onResizerEnter) // NEED toggler.mouseenter because mouseenter MAY NOT fire on resizer
            .appendTo($R) // append SPAN to resizer DIV
            ;
            // ADD INNER-SPANS TO TOGGLER
            if (o.togglerContent_open) // ui-layout-open
                $("<span>"+ o.togglerContent_open +"</span>")
                .data({
                    layoutEdge:		pane
                    ,	
                    layoutRole:		"togglerContent"
                })
                .data("layoutRole", "togglerContent")
                .data("layoutEdge", pane)
                .addClass("content content-open")
                .css("display","none")
                .appendTo( $T )
            //.hover( addHover, removeHover ) // use ui-layout-toggler-west-hover .content-open instead!
            ;
            if (o.togglerContent_closed) // ui-layout-closed
                $("<span>"+ o.togglerContent_closed +"</span>")
                .data({
                    layoutEdge:		pane
                    ,	
                    layoutRole:		"togglerContent"
                })
                .addClass("content content-closed")
                .css("display","none")
                .appendTo( $T )
            //.hover( addHover, removeHover ) // use ui-layout-toggler-west-hover .content-closed instead!
            ;
            // ADD TOGGLER.click/.hover
            enableClosable(pane);
        }

        // add Draggable events
        initResizable(pane);

        // ADD CLASSNAMES & SLIDE-BINDINGS - eg: class="resizer resizer-west resizer-open"
        if (s.isVisible)
            setAsOpen(pane);	// onOpen will be called, but NOT onResize
        else {
            setAsClosed(pane);	// onClose will be called
            bindStartSlidingEvent(pane, true); // will enable events IF option is set
        }

    });

    // SET ALL HANDLE DIMENSIONS
    sizeHandles();
}


/**
	* Initialize scrolling ui-layout-content div - if exists
	*
	* @see  initPane() - or externally after an Ajax injection
	* @param {string}	[pane]			The pane to process
	* @param {boolean=}	[resize=true]	Size content after init
	*/
,	initContent = function (pane, resize) {
    if (!isInitialized()) return;
    var 
    o	= options[pane]
    ,	sel	= o.contentSelector
    ,	I	= Instance[pane]
    ,	$P	= $Ps[pane]
    ,	$C
    ;
    if (sel) $C = I.content = $Cs[pane] = (o.findNestedContent)
        ? $P.find(sel).eq(0) // match 1-element only
        : $P.children(sel).eq(0)
    ;
    if ($C && $C.length) {
        $C.data("layoutRole", "content");
        // SAVE original Pane CSS
        if (!$C.data("layoutCSS"))
            $C.data("layoutCSS", elCSS($C, "height"));
        $C.css( _c.content.cssReq );
        if (o.applyDemoStyles) {
            $C.css( _c.content.cssDemo ); // add padding & overflow: auto to content-div
            $P.css( _c.content.cssDemoPane ); // REMOVE padding/scrolling from pane
        }
        state[pane].content = {}; // init content state
        if (resize !== false) sizeContent(pane);
    // sizeContent() is called AFTER init of all elements
    }
    else
        I.content = $Cs[pane] = false;
}


/**
	* Add resize-bars to all panes that specify it in options
	* -dependancy: $.fn.resizable - will skip if not found
	*
	* @see  _create()
	* @param {string=}	[panes=""]	The edge(s) to process
	*/
,	initResizable = function (panes) {
    var	draggingAvailable = $.layout.plugins.draggable
    ,	side // set in start()
    ;
    panes = panes ? panes.split(",") : _c.borderPanes;

    $.each(panes, function (idx, pane) {
        var o = options[pane];
        if (!draggingAvailable || !$Ps[pane] || !o.resizable) {
            o.resizable = false;
            return true; // skip to next
        }

        var s		= state[pane]
        ,	z		= options.zIndexes
        ,	c		= _c[pane]
        ,	side	= c.dir=="horz" ? "top" : "left"
        ,	opEdge	= _c.oppositeEdge[pane]
        ,	masks	=  pane +",center,"+ opEdge + (c.dir=="horz" ? ",west,east" : "")
        ,	$P 		= $Ps[pane]
        ,	$R		= $Rs[pane]
        ,	base	= o.resizerClass
        ,	lastPos	= 0 // used when live-resizing
        ,	r, live // set in start because may change
        //	'drag' classes are applied to the ORIGINAL resizer-bar while dragging is in process
        ,	resizerClass		= base+"-drag"				// resizer-drag
        ,	resizerPaneClass	= base+"-"+pane+"-drag"		// resizer-north-drag
        //	'helper' class is applied to the CLONED resizer-bar while it is being dragged
        ,	helperClass			= base+"-dragging"			// resizer-dragging
        ,	helperPaneClass		= base+"-"+pane+"-dragging" // resizer-north-dragging
        ,	helperLimitClass	= base+"-dragging-limit"	// resizer-drag
        ,	helperPaneLimitClass = base+"-"+pane+"-dragging-limit"	// resizer-north-drag
        ,	helperClassesSet	= false 					// logic var
        ;

        if (!s.isClosed)
            $R.attr("title", o.resizerTip)
            .css("cursor", o.resizerCursor); // n-resize, s-resize, etc

        $R.draggable({
            containment:	$N[0] // limit resizing to layout container
            ,	
            axis:			(c.dir=="horz" ? "y" : "x") // limit resizing to horz or vert axis
            ,	
            delay:			0
            ,	
            distance:		1
            ,	
            grid:			o.resizingGrid
            //	basic format for helper - style it using class: .ui-draggable-dragging
            ,	
            helper:			"clone"
            ,	
            opacity:		o.resizerDragOpacity
            ,	
            addClasses:		false // avoid ui-state-disabled class when disabled
            //,	iframeFix:		o.draggableIframeFix // TODO: consider using when bug is fixed
            ,	
            zIndex:			z.resizer_drag

            ,	
            start: function (e, ui) {
                // REFRESH options & state pointers in case we used swapPanes
                o = options[pane];
                s = state[pane];
                // re-read options
                live = o.livePaneResizing;

                // ondrag_start callback - will CANCEL hide if returns false
                // TODO: dragging CANNOT be cancelled like this, so see if there is a way?
                if (false === _runCallbacks("ondrag_start", pane)) return false;

                s.isResizing	= true; // prevent pane from closing while resizing
                timer.clear(pane+"_closeSlider"); // just in case already triggered

                // SET RESIZER LIMITS - used in drag()
                setSizeLimits(pane); // update pane/resizer state
                r = s.resizerPosition;
                lastPos = ui.position[ side ]

                $R.addClass( resizerClass +" "+ resizerPaneClass ); // add drag classes
                helperClassesSet = false; // reset logic var - see drag()

                // DISABLE TEXT SELECTION (probably already done by resizer.mouseOver)
                $('body').disableSelection(); 

                // MASK PANES CONTAINING IFRAMES, APPLETS OR OTHER TROUBLESOME ELEMENTS
                showMasks( masks );
            }

            ,	
            drag: function (e, ui) {
                if (!helperClassesSet) { // can only add classes after clone has been added to the DOM
                    //$(".ui-draggable-dragging")
                    ui.helper
                    .addClass( helperClass +" "+ helperPaneClass ) // add helper classes
                    .css({
                        right: "auto", 
                        bottom: "auto"
                    })	// fix dir="rtl" issue
                    .children().css("visibility","hidden")	// hide toggler inside dragged resizer-bar
                    ;
                    helperClassesSet = true;
                    // draggable bug!? RE-SET zIndex to prevent E/W resize-bar showing through N/S pane!
                    if (s.isSliding) $Ps[pane].css("zIndex", z.pane_sliding);
                }
                // CONTAIN RESIZER-BAR TO RESIZING LIMITS
                var limit = 0;
                if (ui.position[side] < r.min) {
                    ui.position[side] = r.min;
                    limit = -1;
                }
                else if (ui.position[side] > r.max) {
                    ui.position[side] = r.max;
                    limit = 1;
                }
                // ADD/REMOVE dragging-limit CLASS
                if (limit) {
                    ui.helper.addClass( helperLimitClass +" "+ helperPaneLimitClass ); // at dragging-limit
                    window.defaultStatus = (limit>0 && pane.match(/north|west/)) || (limit<0 && pane.match(/south|east/)) ? lang.maxSizeWarning : lang.minSizeWarning;
                }
                else {
                    ui.helper.removeClass( helperLimitClass +" "+ helperPaneLimitClass ); // not at dragging-limit
                    window.defaultStatus = "";
                }
                // DYNAMICALLY RESIZE PANES IF OPTION ENABLED
                // won't trigger unless resizer has actually moved!
                if (live && Math.abs(ui.position[side] - lastPos) >= o.liveResizingTolerance) {
                    lastPos = ui.position[side];
                    resizePanes(e, ui, pane)
                }
            }

            ,	
            stop: function (e, ui) {
                $('body').enableSelection(); // RE-ENABLE TEXT SELECTION
                window.defaultStatus = ""; // clear 'resizing limit' message from statusbar
                $R.removeClass( resizerClass +" "+ resizerPaneClass ); // remove drag classes from Resizer
                s.isResizing = false;
                resizePanes(e, ui, pane, true, masks); // true = resizingDone
            }

        });
    });

    /**
		* resizePanes
		*
		* Sub-routine called from stop() - and drag() if livePaneResizing
		*
		* @param {!Object}		evt
		* @param {!Object}		ui
		* @param {string}		pane
		* @param {boolean=}		[resizingDone=false]
		*/
    var resizePanes = function (evt, ui, pane, resizingDone, masks) {
        var	dragPos	= ui.position
        ,	c		= _c[pane]
        ,	o		= options[pane]
        ,	s		= state[pane]
        ,	resizerPos
        ;
        switch (pane) {
            case "north":
                resizerPos = dragPos.top;
                break;
            case "west":
                resizerPos = dragPos.left;
                break;
            case "south":
                resizerPos = sC.offsetHeight - dragPos.top  - o.spacing_open;
                break;
            case "east":
                resizerPos = sC.offsetWidth  - dragPos.left - o.spacing_open;
                break;
        };
        // remove container margin from resizer position to get the pane size
        var newSize = resizerPos - sC["inset"+ c.side];

        // Disable OR Resize Mask(s) created in drag.start
        if (!resizingDone) {
            // ensure we meet liveResizingTolerance criteria
            if (Math.abs(newSize - s.size) < o.liveResizingTolerance)
                return; // SKIP resize this time
            // resize the pane
            manualSizePane(pane, newSize, false, true); // true = noAnimation
            sizeMasks(); // resize all visible masks
        }
        else { // resizingDone
            // ondrag_end callback
            if (false !== _runCallbacks("ondrag_end", pane))
                manualSizePane(pane, newSize, false, true); // true = noAnimation
            hideMasks(); // hide all masks, which include panes with 'content/iframe-masks'
            if (s.isSliding && masks) // RE-SHOW only 'object-masks' so objects won't show through sliding pane
                showMasks( masks, true ); // true = onlyForObjects
        }
    };
}

/**
	 *	sizeMask
	 *
	 *	Needed to overlay a DIV over an IFRAME-pane because mask CANNOT be *inside* the pane
	 *	Called when mask created, and during livePaneResizing
	 */
,	sizeMask = function () {
    var $M		= $(this)
    ,	pane	= $M.data("layoutMask") // eg: "west"
    ,	s		= state[pane]
    ;
    // only masks over an IFRAME-pane need manual resizing
    if (s.tagName == "IFRAME" && s.isVisible) // no need to mask closed/hidden panes
        $M.css({
            top:	s.offsetTop
            ,	
            left:	s.offsetLeft
            ,	
            width:	s.outerWidth
            ,	
            height:	s.outerHeight
        });
/* ALT Method...
		var $P = $Ps[pane];
		$M.css( $P.position() ).css({ width: $P[0].offsetWidth, height: $P[0].offsetHeight });
		*/
}
,	sizeMasks = function () {
    $Ms.each( sizeMask ); // resize all 'visible' masks
}

,	showMasks = function (panes, onlyForObjects) {
    var a	= panes ? panes.split(",") : $.layout.config.allPanes
    ,	z	= options.zIndexes
    ,	o, s;
    $.each(a, function(i,p){
        s = state[p];
        o = options[p];
        if (s.isVisible && ( (!onlyForObjects && o.maskContents) || o.maskObjects )) {
            getMasks(p).each(function(){
                sizeMask.call(this);
                this.style.zIndex = s.isSliding ? z.pane_sliding+1 : z.pane_normal+1
                this.style.display = "block";
            });
        }
    });
}

,	hideMasks = function () {
    // ensure no pane is resizing - could be a timing issue
    var skip;
    $.each( $.layout.config.borderPanes, function(i,p){
        if (state[p].isResizing) {
            skip = true;
            return false; // BREAK
        }
    });
    if (!skip)
        $Ms.hide(); // hide ALL masks
}

,	getMasks = function (pane) {
    var $Masks	= $([])
    ,	$M, i = 0, c = $Ms.length
    ;
    for (; i<c; i++) {
        $M = $Ms.eq(i);
        if ($M.data("layoutMask") === pane)
            $Masks = $Masks.add( $M );
    }
    if ($Masks.length)
        return $Masks;
    else
        return createMasks(pane);
}

/**
	 *	createMasks
	 *
	 *	Generates both DIV (ALWAYS used) and IFRAME (optional) elements as masks
	 *	An IFRAME mask is created *under* the DIV when maskObjects=true, because a DIV cannot mask an applet
	 */
,	createMasks = function (pane) {
    var
    $P		= $Ps[pane]
    ,	s		= state[pane]
    ,	o		= options[pane]
    ,	z		= options.zIndexes
    //,	objMask	= o.maskObjects && s.tagName != "IFRAME" // check for option
    ,	$Masks	= $([])
    ,	isIframe, el, $M, css, i
    ;
    if (!o.maskContents && !o.maskObjects) return $Masks;
    // if o.maskObjects=true, then loop TWICE to create BOTH kinds of mask, else only create a DIV
    for (i=0; i < (o.maskObjects ? 2 : 1); i++) {
        isIframe = o.maskObjects && i==0;
        el = document.createElement( isIframe ? "iframe" : "div" );
        $M = $(el).data("layoutMask", pane); // add data to relate mask to pane
        el.className = "ui-layout-mask ui-layout-mask-"+ pane; // for user styling
        css = el.style;
        // styles common to both DIVs and IFRAMES
        css.display		= "block";
        css.position	= "absolute";
        if (isIframe) { // IFRAME-only props
            el.frameborder = 0;
            el.src		= "about:blank";
            css.opacity	= 0;
            css.filter	= "Alpha(Opacity='0')";
            css.border	= 0;
        }
        // if pane is an IFRAME, then must mask the pane itself
        if (s.tagName == "IFRAME") {
            // NOTE sizing done by a subroutine so can be called during live-resizing
            css.zIndex	= z.pane_normal+1; // 1-higher than pane
            $N.append( el ); // append to LAYOUT CONTAINER
        }
        // otherwise put masks *inside the pane* to mask its contents
        else {
            $M.addClass("ui-layout-mask-inside-pane");
            css.zIndex	= o.maskZindex || z.content_mask; // usually 1, but customizable
            css.top		= 0;
            css.left	= 0;
            css.width	= "100%";
            css.height	= "100%";
            $P.append( el ); // append INSIDE pane element
        }
        // add to return object
        $Masks = $Masks.add( el );
        // add Mask to cached array so can be resized & reused
        $Ms = $Ms.add( el );
    }
    return $Masks;
}


/**
	* Destroy this layout and reset all elements
	*
	* @param {boolean=}	[destroyChildren=false]		Destory Child-Layouts first?
	*/
,	destroy = function (destroyChildren) {
    // UNBIND layout events and remove global object
    $(window).unbind("."+ sID);		// resize & unload
    $(document).unbind("."+ sID);	// keyDown (hotkeys)

    // need to look for parent layout BEFORE we remove the container data, else skips a level
    //var parentPane = Instance.hasParentLayout ? $.layout.getParentPaneInstance( $N ) : null;

    // reset layout-container
    $N	.clearQueue()
    .removeData("layout")
    .removeData("layoutContainer")
    .removeClass(options.containerClass)
    .unbind("."+ sID) // remove ALL Layout events
    ;

    // remove all mask elements that have been created
    $Ms.remove();

    // loop all panes to remove layout classes, attributes and bindings
    $.each(_c.allPanes, function (i, pane) {
        removePane( pane, false, true, destroyChildren ); // true = skipResize
    });

    // do NOT reset container CSS if is a 'pane' (or 'content') in an outer-layout - ie, THIS layout is 'nested'
    var css = "layoutCSS";
    if ($N.data(css) && !$N.data("layoutRole")) // RESET CSS
        $N.css( $N.data(css) ).removeData(css);

    // for full-page layouts, also reset the <HTML> CSS
    if (sC.tagName === "BODY" && ($N = $("html")).data(css)) // RESET <HTML> CSS
        $N.css( $N.data(css) ).removeData(css);

    // trigger plugins for this layout, if there are any
    runPluginCallbacks( Instance, $.layout.onDestroy );

    // trigger state-management and onunload callback
    unload();

    // clear the Instance of everything except for container & options (so could recreate)
    // RE-CREATE: myLayout = myLayout.container.layout( myLayout.options );
    for (n in Instance)
        if (!n.match(/^(container|options)$/)) delete Instance[ n ];
    // add a 'destroyed' flag to make it easy to check
    Instance.destroyed = true;

    // if this is a child layout, CLEAR the child-pointer in the parent
    /* for now the pointer REMAINS, but with only container, options and destroyed keys
		if (parentPane) {
			var layout = parentPane.pane.data("parentLayout");
			parentPane.child = layout.children[ parentPane.name ] = null;
		}
		*/

    return Instance; // for coding convenience
}

/**
	* Remove a pane from the layout - subroutine of destroy()
	*
	* @see  destroy()
	* @param {string}	pane				The pane to process
	* @param {boolean=}	[remove=false]		Remove the DOM element?
	* @param {boolean=}	[skipResize=false]	Skip calling resizeAll()?
	*/
,	removePane = function (evt_or_pane, remove, skipResize, destroyChild) {
    if (!isInitialized()) return;
    var	pane = evtPane.call(this, evt_or_pane)
    ,	$P	= $Ps[pane]
    ,	$C	= $Cs[pane]
    ,	$R	= $Rs[pane]
    ,	$T	= $Ts[pane]
    ;
    //alert( '$P.length = '+ $P.length );
    // NOTE: elements can still exist even after remove()
    //		so check for missing data(), which is cleared by removed()
    if ($P && $.isEmptyObject( $P.data() )) $P = false;
    if ($C && $.isEmptyObject( $C.data() )) $C = false;
    if ($R && $.isEmptyObject( $R.data() )) $R = false;
    if ($T && $.isEmptyObject( $T.data() )) $T = false;

    if ($P) $P.stop(true, true);

    //	check for a child layout
    var	o	= options[pane]
    ,	s	= state[pane]
    ,	d	= "layout"
    ,	css	= "layoutCSS"
    ,	child	= children[pane] || ($P ? $P.data(d) : 0) || ($C ? $C.data(d) : 0) || null
    ,	destroy	= destroyChild !== undefined ? destroyChild : o.destroyChildLayout
    ;

    // FIRST destroy the child-layout(s)
    if (destroy && child && !child.destroyed) {
        child.destroy(true);	// tell child-layout to destroy ALL its child-layouts too
        if (child.destroyed)	// destroy was successful
            child = null;		// clear pointer for logic below 
    }

    if ($P && remove && !child)
        $P.remove();
    else if ($P && $P[0]) {
        //	create list of ALL pane-classes that need to be removed
        var	root	= o.paneClass // default="ui-layout-pane"
        ,	pRoot	= root +"-"+ pane // eg: "ui-layout-pane-west"
        ,	_open	= "-open"
        ,	_sliding= "-sliding"
        ,	_closed	= "-closed"
        ,	classes	= [	root, root+_open, root+_closed, root+_sliding,		// generic classes
        pRoot, pRoot+_open, pRoot+_closed, pRoot+_sliding ]	// pane-specific classes
        ;
        $.merge(classes, getHoverClasses($P, true)); // ADD hover-classes
        // remove all Layout classes from pane-element
        $P	.removeClass( classes.join(" ") ) // remove ALL pane-classes
        .removeData("parentLayout")
        .removeData("layoutPane")
        .removeData("layoutRole")
        .removeData("layoutEdge")
        .removeData("autoHidden")	// in case set
        .unbind("."+ sID) // remove ALL Layout events
        // TODO: remove these extra unbind commands when jQuery is fixed
        //.unbind("mouseenter"+ sID)
        //.unbind("mouseleave"+ sID)
        ;
        // do NOT reset CSS if this pane/content is STILL the container of a nested layout!
        // the nested layout will reset its 'container' CSS when/if it is destroyed
        if ($C && $C.data(d)) {
            // a content-div may not have a specific width, so give it one to contain the Layout
            $C.width( $C.width() );
            child.resizeAll(); // now resize the Layout
        }
        else if ($C)
            $C.css( $C.data(css) ).removeData(css).removeData("layoutRole");
        // remove pane AFTER content in case there was a nested layout
        if (!$P.data(d))
            $P.css( $P.data(css) ).removeData(css);
    }

    // REMOVE pane resizer and toggler elements
    if ($T) $T.remove();
    if ($R) $R.remove();

    // CLEAR all pointers and state data
    Instance[pane] = $Ps[pane] = $Cs[pane] = $Rs[pane] = $Ts[pane] = children[pane] = false;
    s = {
        removed: true
    };

    if (!skipResize)
        resizeAll();
}


/*
 * ###########################
 *	   ACTION METHODS
 * ###########################
 */

,	_hidePane = function (pane) {
    var $P	= $Ps[pane]
    ,	o	= options[pane]
    ,	s	= $P[0].style
    ;
    if (o.useOffscreenClose) {
        if (!$P.data(_c.offscreenReset))
            $P.data(_c.offscreenReset, {
                left: s.left, 
                right: s.right
            });
        $P.css( _c.offscreenCSS );
    }
    else
        $P.hide().removeData(_c.offscreenReset);
}

,	_showPane = function (pane) {
    var $P	= $Ps[pane]
    ,	o	= options[pane]
    ,	off	= _c.offscreenCSS
    ,	old	= $P.data(_c.offscreenReset)
    ,	s	= $P[0].style
    ;
    $P	.show() // ALWAYS show, just in case
    .removeData(_c.offscreenReset);
    if (o.useOffscreenClose && old) {
        if (s.left == off.left)
            s.left = old.left;
        if (s.right == off.right)
            s.right = old.right;
    }
}


/**
	* Completely 'hides' a pane, including its spacing - as if it does not exist
	* The pane is not actually 'removed' from the source, so can use 'show' to un-hide it
	*
	* @param {string}	pane		The pane being hidden, ie: north, south, east, or west
	* @param {boolean=}	[noAnimation=false]	
	*/
,	hide = function (evt_or_pane, noAnimation) {
    if (!isInitialized()) return;
    var	pane = evtPane.call(this, evt_or_pane)
    ,	o	= options[pane]
    ,	s	= state[pane]
    ,	$P	= $Ps[pane]
    ,	$R	= $Rs[pane]
    ;
    if (!$P || s.isHidden) return; // pane does not exist OR is already hidden

    // onhide_start callback - will CANCEL hide if returns false
    if (state.initialized && false === _runCallbacks("onhide_start", pane)) return;

    s.isSliding = false; // just in case

    // now hide the elements
    if ($R) $R.hide(); // hide resizer-bar
    if (!state.initialized || s.isClosed) {
        s.isClosed = true; // to trigger open-animation on show()
        s.isHidden  = true;
        s.isVisible = false;
        if (!state.initialized)
            _hidePane(pane); // no animation when loading page
        sizeMidPanes(_c[pane].dir === "horz" ? "" : "center");
        if (state.initialized || o.triggerEventsOnLoad)
            _runCallbacks("onhide_end", pane);
    }
    else {
        s.isHiding = true; // used by onclose
        close(pane, false, noAnimation); // adjust all panes to fit
    }
}

/**
	* Show a hidden pane - show as 'closed' by default unless openPane = true
	*
	* @param {string}	pane		The pane being opened, ie: north, south, east, or west
	* @param {boolean=}	[openPane=false]
	* @param {boolean=}	[noAnimation=false]
	* @param {boolean=}	[noAlert=false]
	*/
,	show = function (evt_or_pane, openPane, noAnimation, noAlert) {
    if (!isInitialized()) return;
    var	pane = evtPane.call(this, evt_or_pane)
    ,	o	= options[pane]
    ,	s	= state[pane]
    ,	$P	= $Ps[pane]
    ,	$R	= $Rs[pane]
    ;
    if (!$P || !s.isHidden) return; // pane does not exist OR is not hidden

    // onshow_start callback - will CANCEL show if returns false
    if (false === _runCallbacks("onshow_start", pane)) return;

    s.isSliding = false; // just in case
    s.isShowing = true; // used by onopen/onclose
    //s.isHidden  = false; - will be set by open/close - if not cancelled

    // now show the elements
    //if ($R) $R.show(); - will be shown by open/close
    if (openPane === false)
        close(pane, true); // true = force
    else
        open(pane, false, noAnimation, noAlert); // adjust all panes to fit
}


/**
	* Toggles a pane open/closed by calling either open or close
	*
	* @param {string}	pane   The pane being toggled, ie: north, south, east, or west
	* @param {boolean=}	[slide=false]
	*/
,	toggle = function (evt_or_pane, slide) {
    if (!isInitialized()) return;
    var	evt		= evtObj(evt_or_pane)
    ,	pane	= evtPane.call(this, evt_or_pane)
    ,	s		= state[pane]
    ;
    if (evt) // called from to $R.dblclick OR triggerPaneEvent
        evt.stopImmediatePropagation();
    if (s.isHidden)
        show(pane); // will call 'open' after unhiding it
    else if (s.isClosed)
        open(pane, !!slide);
    else
        close(pane);
}


/**
	* Utility method used during init or other auto-processes
	*
	* @param {string}	pane   The pane being closed
	* @param {boolean=}	[setHandles=false]
	*/
,	_closePane = function (pane, setHandles) {
    var
    $P	= $Ps[pane]
    ,	s	= state[pane]
    ;
    _hidePane(pane);
    s.isClosed = true;
    s.isVisible = false;
// UNUSED: if (setHandles) setAsClosed(pane, true); // true = force
}

/**
	* Close the specified pane (animation optional), and resize all other panes as needed
	*
	* @param {string}	pane		The pane being closed, ie: north, south, east, or west
	* @param {boolean=}	[force=false]
	* @param {boolean=}	[noAnimation=false]
	* @param {boolean=}	[skipCallback=false]
	*/
,	close = function (evt_or_pane, force, noAnimation, skipCallback) {
    var	pane = evtPane.call(this, evt_or_pane);
    // if pane has been initialized, but NOT the complete layout, close pane instantly
    if (!state.initialized && $Ps[pane]) {
        _closePane(pane); // INIT pane as closed
        return;
    }
    if (!isInitialized()) return;

    var
    $P	= $Ps[pane]
    ,	$R	= $Rs[pane]
    ,	$T	= $Ts[pane]
    ,	o	= options[pane]
    ,	s	= state[pane]
    ,	c	= _c[pane]
    ,	doFX, isShowing, isHiding, wasSliding;

    // QUEUE in case another action/animation is in progress
    $N.queue(function( queueNext ){
	
        if ( !$P
            ||	(!o.closable && !s.isShowing && !s.isHiding)	// invalid request // (!o.resizable && !o.closable) ???
            ||	(!force && s.isClosed && !s.isShowing)			// already closed
                ) return queueNext();

        // onclose_start callback - will CANCEL hide if returns false
        // SKIP if just 'showing' a hidden pane as 'closed'
        var abort = !s.isShowing && false === _runCallbacks("onclose_start", pane);

        // transfer logic vars to temp vars
        isShowing	= s.isShowing;
        isHiding	= s.isHiding;
        wasSliding	= s.isSliding;
        // now clear the logic vars (REQUIRED before aborting)
        delete s.isShowing;
        delete s.isHiding;

        if (abort) return queueNext();

        doFX		= !noAnimation && !s.isClosed && (o.fxName_close != "none");
        s.isMoving	= true;
        s.isClosed	= true;
        s.isVisible	= false;
        // update isHidden BEFORE sizing panes
        if (isHiding) s.isHidden = true;
        else if (isShowing) s.isHidden = false;

        if (s.isSliding) // pane is being closed, so UNBIND trigger events
            bindStopSlidingEvents(pane, false); // will set isSliding=false
        else // resize panes adjacent to this one
            sizeMidPanes(_c[pane].dir === "horz" ? "" : "center", false); // false = NOT skipCallback

        // if this pane has a resizer bar, move it NOW - before animation
        setAsClosed(pane);

        // CLOSE THE PANE
        if (doFX) { // animate the close
            // mask panes with objects
            var masks = "center"+ (c.dir=="horz" ? ",west,east" : "");
            showMasks( masks, true );	// true = ONLY mask panes with maskObjects=true
            lockPaneForFX(pane, true);	// need to set left/top so animation will work
            $P.hide( o.fxName_close, o.fxSettings_close, o.fxSpeed_close, function () {
                lockPaneForFX(pane, false); // undo
                if (s.isClosed) close_2();
                queueNext();
            });
        }
        else { // hide the pane without animation
            _hidePane(pane);
            close_2();
            queueNext();
        };
    });

    // SUBROUTINE
    function close_2 () {
        s.isMoving	= false;
        bindStartSlidingEvent(pane, true); // will enable if o.slidable = true

        // if opposite-pane was autoClosed, see if it can be autoOpened now
        var altPane = _c.oppositeEdge[pane];
        if (state[ altPane ].noRoom) {
            setSizeLimits( altPane );
            makePaneFit( altPane );
        }

        // hide any masks shown while closing
        hideMasks();

        if (!skipCallback && (state.initialized || o.triggerEventsOnLoad)) {
            // onclose callback - UNLESS just 'showing' a hidden pane as 'closed'
            if (!isShowing)	_runCallbacks("onclose_end", pane);
            // onhide OR onshow callback
            if (isShowing)	_runCallbacks("onshow_end", pane);
            if (isHiding)	_runCallbacks("onhide_end", pane);
        }
    }
}

/**
	* @param {string}	pane	The pane just closed, ie: north, south, east, or west
	*/
,	setAsClosed = function (pane) {
    var
    $P		= $Ps[pane]
    ,	$R		= $Rs[pane]
    ,	$T		= $Ts[pane]
    ,	o		= options[pane]
    ,	s		= state[pane]
    ,	side	= _c[pane].side.toLowerCase()
    ,	inset	= "inset"+ _c[pane].side
    ,	rClass	= o.resizerClass
    ,	tClass	= o.togglerClass
    ,	_pane	= "-"+ pane // used for classNames
    ,	_open	= "-open"
    ,	_sliding= "-sliding"
    ,	_closed	= "-closed"
    ;
    $R
    .css(side, sC[inset]) // move the resizer
    .removeClass( rClass+_open +" "+ rClass+_pane+_open )
    .removeClass( rClass+_sliding +" "+ rClass+_pane+_sliding )
    .addClass( rClass+_closed +" "+ rClass+_pane+_closed )
    .unbind("dblclick."+ sID)
    ;
    // DISABLE 'resizing' when closed - do this BEFORE bindStartSlidingEvent?
    if (o.resizable && $.layout.plugins.draggable)
        $R
        .draggable("disable")
        .removeClass("ui-state-disabled") // do NOT apply disabled styling - not suitable here
        .css("cursor", "default")
        .attr("title","")
    ;

    // if pane has a toggler button, adjust that too
    if ($T) {
        $T
        .removeClass( tClass+_open +" "+ tClass+_pane+_open )
        .addClass( tClass+_closed +" "+ tClass+_pane+_closed )
        .attr("title", o.togglerTip_closed) // may be blank
        ;
        // toggler-content - if exists
        $T.children(".content-open").hide();
        $T.children(".content-closed").css("display","block");
    }

    // sync any 'pin buttons'
    syncPinBtns(pane, false);

    if (state.initialized) {
        // resize 'length' and position togglers for adjacent panes
        sizeHandles();
    }
}

/**
	* Open the specified pane (animation optional), and resize all other panes as needed
	*
	* @param {string}	pane		The pane being opened, ie: north, south, east, or west
	* @param {boolean=}	[slide=false]
	* @param {boolean=}	[noAnimation=false]
	* @param {boolean=}	[noAlert=false]
	*/
,	open = function (evt_or_pane, slide, noAnimation, noAlert) {
    if (!isInitialized()) return;
    var	pane = evtPane.call(this, evt_or_pane)
    ,	$P	= $Ps[pane]
    ,	$R	= $Rs[pane]
    ,	$T	= $Ts[pane]
    ,	o	= options[pane]
    ,	s	= state[pane]
    ,	c	= _c[pane]
    ,	doFX, isShowing
    ;
    // QUEUE in case another action/animation is in progress
    $N.queue(function( queueNext ){

        if ( !$P
            ||	(!o.resizable && !o.closable && !s.isShowing)	// invalid request
            ||	(s.isVisible && !s.isSliding)					// already open
                ) return queueNext();

        // pane can ALSO be unhidden by just calling show(), so handle this scenario
        if (s.isHidden && !s.isShowing) {
            queueNext(); // call before show() because it needs the queue free
            show(pane, true);
            return;
        }

        if (o.autoResize && s.size != o.size) // resize pane to original size set in options
            sizePane(pane, o.size, true, true, true); // true=skipCallback/forceResize/noAnimation
        else
            // make sure there is enough space available to open the pane
            setSizeLimits(pane, slide);

        // onopen_start callback - will CANCEL open if returns false
        var cbReturn = _runCallbacks("onopen_start", pane);

        if (cbReturn === "abort")
            return queueNext();

        // update pane-state again in case options were changed in onopen_start
        if (cbReturn !== "NC") // NC = "No Callback"
            setSizeLimits(pane, slide);

        if (s.minSize > s.maxSize) { // INSUFFICIENT ROOM FOR PANE TO OPEN!
            syncPinBtns(pane, false); // make sure pin-buttons are reset
            if (!noAlert && o.noRoomToOpenTip)
                alert(o.noRoomToOpenTip);
            return queueNext(); // ABORT
        }

        if (slide) // START Sliding - will set isSliding=true
            bindStopSlidingEvents(pane, true); // BIND trigger events to close sliding-pane
        else if (s.isSliding) // PIN PANE (stop sliding) - open pane 'normally' instead
            bindStopSlidingEvents(pane, false); // UNBIND trigger events - will set isSliding=false
        else if (o.slidable)
            bindStartSlidingEvent(pane, false); // UNBIND trigger events

        s.noRoom = false; // will be reset by makePaneFit if 'noRoom'
        makePaneFit(pane);

        // transfer logic var to temp var
        isShowing = s.isShowing;
        // now clear the logic var
        delete s.isShowing;

        doFX		= !noAnimation && s.isClosed && (o.fxName_open != "none");
        s.isMoving	= true;
        s.isVisible	= true;
        s.isClosed	= false;
        // update isHidden BEFORE sizing panes - WHY??? Old?
        if (isShowing) s.isHidden = false;

        if (doFX) { // ANIMATE
            // mask panes with objects
            var masks = "center"+ (c.dir=="horz" ? ",west,east" : "");
            if (s.isSliding) masks += ","+ _c.oppositeEdge[pane];
            showMasks( masks, true );	// true = ONLY mask panes with maskObjects=true
            lockPaneForFX(pane, true);	// need to set left/top so animation will work
            $P.show( o.fxName_open, o.fxSettings_open, o.fxSpeed_open, function() {
                lockPaneForFX(pane, false); // undo
                if (s.isVisible) open_2(); // continue
                queueNext();
            });
        }
        else { // no animation
            _showPane(pane);// just show pane and...
            open_2();		// continue
            queueNext();
        };
    });

    // SUBROUTINE
    function open_2 () {
        s.isMoving	= false;

        // cure iframe display issues
        _fixIframe(pane);

        // NOTE: if isSliding, then other panes are NOT 'resized'
        if (!s.isSliding) { // resize all panes adjacent to this one
            hideMasks(); // remove any masks shown while opening
            sizeMidPanes(_c[pane].dir=="vert" ? "center" : "", false); // false = NOT skipCallback
        }

        // set classes, position handles and execute callbacks...
        setAsOpen(pane);
    };
	
}

/**
	* @param {string}	pane		The pane just opened, ie: north, south, east, or west
	* @param {boolean=}	[skipCallback=false]
	*/
,	setAsOpen = function (pane, skipCallback) {
    var 
    $P		= $Ps[pane]
    ,	$R		= $Rs[pane]
    ,	$T		= $Ts[pane]
    ,	o		= options[pane]
    ,	s		= state[pane]
    ,	side	= _c[pane].side.toLowerCase()
    ,	inset	= "inset"+ _c[pane].side
    ,	rClass	= o.resizerClass
    ,	tClass	= o.togglerClass
    ,	_pane	= "-"+ pane // used for classNames
    ,	_open	= "-open"
    ,	_closed	= "-closed"
    ,	_sliding= "-sliding"
    ;
    $R
    .css(side, sC[inset] + getPaneSize(pane)) // move the resizer
    .removeClass( rClass+_closed +" "+ rClass+_pane+_closed )
    .addClass( rClass+_open +" "+ rClass+_pane+_open )
    ;
    if (s.isSliding)
        $R.addClass( rClass+_sliding +" "+ rClass+_pane+_sliding )
    else // in case 'was sliding'
        $R.removeClass( rClass+_sliding +" "+ rClass+_pane+_sliding )

    if (o.resizerDblClickToggle)
        $R.bind("dblclick", toggle );
    removeHover( 0, $R ); // remove hover classes
    if (o.resizable && $.layout.plugins.draggable)
        $R	.draggable("enable")
        .css("cursor", o.resizerCursor)
        .attr("title", o.resizerTip);
    else if (!s.isSliding)
        $R.css("cursor", "default"); // n-resize, s-resize, etc

    // if pane also has a toggler button, adjust that too
    if ($T) {
        $T	.removeClass( tClass+_closed +" "+ tClass+_pane+_closed )
        .addClass( tClass+_open +" "+ tClass+_pane+_open )
        .attr("title", o.togglerTip_open); // may be blank
        removeHover( 0, $T ); // remove hover classes
        // toggler-content - if exists
        $T.children(".content-closed").hide();
        $T.children(".content-open").css("display","block");
    }

    // sync any 'pin buttons'
    syncPinBtns(pane, !s.isSliding);

    // update pane-state dimensions - BEFORE resizing content
    $.extend(s, elDims($P));

    if (state.initialized) {
        // resize resizer & toggler sizes for all panes
        sizeHandles();
        // resize content every time pane opens - to be sure
        sizeContent(pane, true); // true = remeasure headers/footers, even if 'pane.isMoving'
    }

    if (!skipCallback && (state.initialized || o.triggerEventsOnLoad) && $P.is(":visible")) {
        // onopen callback
        _runCallbacks("onopen_end", pane);
        // onshow callback - TODO: should this be here?
        if (s.isShowing) _runCallbacks("onshow_end", pane);

        // ALSO call onresize because layout-size *may* have changed while pane was closed
        if (state.initialized)
            _runCallbacks("onresize_end", pane);
    }

// TODO: Somehow sizePane("north") is being called after this point???
}


/**
	* slideOpen / slideClose / slideToggle
	*
	* Pass-though methods for sliding
	*/
,	slideOpen = function (evt_or_pane) {
    if (!isInitialized()) return;
    var	evt		= evtObj(evt_or_pane)
    ,	pane	= evtPane.call(this, evt_or_pane)
    ,	s		= state[pane]
    ,	delay	= options[pane].slideDelay_open
    ;
    // prevent event from triggering on NEW resizer binding created below
    if (evt) evt.stopImmediatePropagation();

    if (s.isClosed && evt && evt.type === "mouseenter" && delay > 0)
        // trigger = mouseenter - use a delay
        timer.set(pane+"_openSlider", open_NOW, delay);
    else
        open_NOW(); // will unbind events if is already open

    /**
		* SUBROUTINE for timed open
		*/
    function open_NOW () {
        if (!s.isClosed) // skip if no longer closed!
            bindStopSlidingEvents(pane, true); // BIND trigger events to close sliding-pane
        else if (!s.isMoving)
            open(pane, true); // true = slide - open() will handle binding
    };
}

,	slideClose = function (evt_or_pane) {
    if (!isInitialized()) return;
    var	evt		= evtObj(evt_or_pane)
    ,	pane	= evtPane.call(this, evt_or_pane)
    ,	o		= options[pane]
    ,	s		= state[pane]
    ,	delay	= s.isMoving ? 1000 : 300 // MINIMUM delay - option may override
    ;
    if (s.isClosed || s.isResizing)
        return; // skip if already closed OR in process of resizing
    else if (o.slideTrigger_close === "click")
        close_NOW(); // close immediately onClick
    else if (o.preventQuickSlideClose && s.isMoving)
        return; // handle Chrome quick-close on slide-open
    else if (o.preventPrematureSlideClose && evt && $.layout.isMouseOverElem(evt, $Ps[pane]))
        return; // handle incorrect mouseleave trigger, like when over a SELECT-list in IE
    else if (evt) // trigger = mouseleave - use a delay
        // 1 sec delay if 'opening', else .3 sec
        timer.set(pane+"_closeSlider", close_NOW, max(o.slideDelay_close, delay));
    else // called programically
        close_NOW();

    /**
		* SUBROUTINE for timed close
		*/
    function close_NOW () {
        if (s.isClosed) // skip 'close' if already closed!
            bindStopSlidingEvents(pane, false); // UNBIND trigger events - TODO: is this needed here?
        else if (!s.isMoving)
            close(pane); // close will handle unbinding
    };
}

/**
	* @param {string}	pane		The pane being opened, ie: north, south, east, or west
	*/
,	slideToggle = function (evt_or_pane) {
    var pane = evtPane.call(this, evt_or_pane);
    toggle(pane, true);
}


/**
	* Must set left/top on East/South panes so animation will work properly
	*
	* @param {string}	pane	The pane to lock, 'east' or 'south' - any other is ignored!
	* @param {boolean}	doLock  true = set left/top, false = remove
	*/
,	lockPaneForFX = function (pane, doLock) {
    var $P	= $Ps[pane]
    ,	s	= state[pane]
    ,	o	= options[pane]
    ,	z	= options.zIndexes
    ;
    if (doLock) {
        $P.css({
            zIndex: z.pane_animate
        }); // overlay all elements during animation
        if (pane=="south")
            $P.css({
                top: sC.insetTop + sC.innerHeight - $P.outerHeight()
            });
        else if (pane=="east")
            $P.css({
                left: sC.insetLeft + sC.innerWidth - $P.outerWidth()
            });
    }
    else { // animation DONE - RESET CSS
        // TODO: see if this can be deleted. It causes a quick-close when sliding in Chrome
        $P.css({
            zIndex: (s.isSliding ? z.pane_sliding : z.pane_normal)
        });
        if (pane=="south")
            $P.css({
                top: "auto"
            });
        // if pane is positioned 'off-screen', then DO NOT screw with it!
        else if (pane=="east" && !$P.css("left").match(/\-99999/))
            $P.css({
                left: "auto"
            });
        // fix anti-aliasing in IE - only needed for animations that change opacity
        if (browser.msie && o.fxOpacityFix && o.fxName_open != "slide" && $P.css("filter") && $P.css("opacity") == 1)
            $P[0].style.removeAttribute('filter');
    }
}


/**
	* Toggle sliding functionality of a specific pane on/off by adding removing 'slide open' trigger
	*
	* @see  open(), close()
	* @param {string}	pane	The pane to enable/disable, 'north', 'south', etc.
	* @param {boolean}	enable	Enable or Disable sliding?
	*/
,	bindStartSlidingEvent = function (pane, enable) {
    var o		= options[pane]
    ,	$P		= $Ps[pane]
    ,	$R		= $Rs[pane]
    ,	evtName	= o.slideTrigger_open.toLowerCase()
    ;
    if (!$R || (enable && !o.slidable)) return;

    // make sure we have a valid event
    if (evtName.match(/mouseover/))
        evtName = o.slideTrigger_open = "mouseenter";
    else if (!evtName.match(/click|dblclick|mouseenter/)) 
        evtName = o.slideTrigger_open = "click";

    $R
    // add or remove event
    [enable ? "bind" : "unbind"](evtName +'.'+ sID, slideOpen)
    // set the appropriate cursor & title/tip
    .css("cursor", enable ? o.sliderCursor : "default")
    .attr("title", enable ? o.sliderTip : "")
;
}

/**
	* Add or remove 'mouseleave' events to 'slide close' when pane is 'sliding' open or closed
	* Also increases zIndex when pane is sliding open
	* See bindStartSlidingEvent for code to control 'slide open'
	*
	* @see  slideOpen(), slideClose()
	* @param {string}	pane	The pane to process, 'north', 'south', etc.
	* @param {boolean}	enable	Enable or Disable events?
	*/
,	bindStopSlidingEvents = function (pane, enable) {
    var	o		= options[pane]
    ,	s		= state[pane]
    ,	c		= _c[pane]
    ,	z		= options.zIndexes
    ,	evtName	= o.slideTrigger_close.toLowerCase()
    ,	action	= (enable ? "bind" : "unbind")
    ,	$P		= $Ps[pane]
    ,	$R		= $Rs[pane]
    ;
    s.isSliding = enable; // logic
    timer.clear(pane+"_closeSlider"); // just in case

    // remove 'slideOpen' event from resizer
    // ALSO will raise the zIndex of the pane & resizer
    if (enable) bindStartSlidingEvent(pane, false);

    // RE/SET zIndex - increases when pane is sliding-open, resets to normal when not
    $P.css("zIndex", enable ? z.pane_sliding : z.pane_normal);
    $R.css("zIndex", enable ? z.pane_sliding+2 : z.resizer_normal); // NOTE: mask = pane_sliding+1

    // make sure we have a valid event
    if (!evtName.match(/click|mouseleave/))
        evtName = o.slideTrigger_close = "mouseleave"; // also catches 'mouseout'

    // add/remove slide triggers
    $R[action](evtName, slideClose); // base event on resize
    // need extra events for mouseleave
    if (evtName === "mouseleave") {
        // also close on pane.mouseleave
        $P[action]("mouseleave."+ sID, slideClose);
        // cancel timer when mouse moves between 'pane' and 'resizer'
        $R[action]("mouseenter."+ sID, cancelMouseOut);
        $P[action]("mouseenter."+ sID, cancelMouseOut);
    }

    if (!enable)
        timer.clear(pane+"_closeSlider");
    else if (evtName === "click" && !o.resizable) {
        // IF pane is not resizable (which already has a cursor and tip) 
        // then set the a cursor & title/tip on resizer when sliding
        $R.css("cursor", enable ? o.sliderCursor : "default");
        $R.attr("title", enable ? o.togglerTip_open : ""); // use Toggler-tip, eg: "Close Pane"
    }

    // SUBROUTINE for mouseleave timer clearing
    function cancelMouseOut (evt) {
        timer.clear(pane+"_closeSlider");
        evt.stopPropagation();
    }
}


/**
	* Hides/closes a pane if there is insufficient room - reverses this when there is room again
	* MUST have already called setSizeLimits() before calling this method
	*
	* @param {string}	pane					The pane being resized
	* @param {boolean=}	[isOpening=false]		Called from onOpen?
	* @param {boolean=}	[skipCallback=false]	Should the onresize callback be run?
	* @param {boolean=}	[force=false]
	*/
,	makePaneFit = function (pane, isOpening, skipCallback, force) {
    var
    o	= options[pane]
    ,	s	= state[pane]
    ,	c	= _c[pane]
    ,	$P	= $Ps[pane]
    ,	$R	= $Rs[pane]
    ,	isSidePane 	= c.dir==="vert"
    ,	hasRoom		= false
    ;
    // special handling for center & east/west panes
    if (pane === "center" || (isSidePane && s.noVerticalRoom)) {
        // see if there is enough room to display the pane
        // ERROR: hasRoom = s.minHeight <= s.maxHeight && (isSidePane || s.minWidth <= s.maxWidth);
        hasRoom = (s.maxHeight >= 0);
        if (hasRoom && s.noRoom) { // previously hidden due to noRoom, so show now
            _showPane(pane);
            if ($R) $R.show();
            s.isVisible = true;
            s.noRoom = false;
            if (isSidePane) s.noVerticalRoom = false;
            _fixIframe(pane);
        }
        else if (!hasRoom && !s.noRoom) { // not currently hidden, so hide now
            _hidePane(pane);
            if ($R) $R.hide();
            s.isVisible = false;
            s.noRoom = true;
        }
    }

    // see if there is enough room to fit the border-pane
    if (pane === "center") {
    // ignore center in this block
    }
    else if (s.minSize <= s.maxSize) { // pane CAN fit
        hasRoom = true;
        if (s.size > s.maxSize) // pane is too big - shrink it
            sizePane(pane, s.maxSize, skipCallback, force, true); // true = noAnimation
        else if (s.size < s.minSize) // pane is too small - enlarge it
            sizePane(pane, s.minSize, skipCallback, force, true);
        // need s.isVisible because new pseudoClose method keeps pane visible, but off-screen
        else if ($R && s.isVisible && $P.is(":visible")) {
            // make sure resizer-bar is positioned correctly
            // handles situation where nested layout was 'hidden' when initialized
            var	side = c.side.toLowerCase()
            ,	pos  = s.size + sC["inset"+ c.side]
            ;
            if ($.layout.cssNum($R, side) != pos) $R.css( side, pos );
        }

        // if was previously hidden due to noRoom, then RESET because NOW there is room
        if (s.noRoom) {
            // s.noRoom state will be set by open or show
            if (s.wasOpen && o.closable) {
                if (o.autoReopen)
                    open(pane, false, true, true); // true = noAnimation, true = noAlert
                else // leave the pane closed, so just update state
                    s.noRoom = false;
            }
            else
                show(pane, s.wasOpen, true, true); // true = noAnimation, true = noAlert
        }
    }
    else { // !hasRoom - pane CANNOT fit
        if (!s.noRoom) { // pane not set as noRoom yet, so hide or close it now...
            s.noRoom = true; // update state
            s.wasOpen = !s.isClosed && !s.isSliding;
            if (s.isClosed){} // SKIP
            else if (o.closable) // 'close' if possible
                close(pane, true, true); // true = force, true = noAnimation
            else // 'hide' pane if cannot just be closed
                hide(pane, true); // true = noAnimation
        }
    }
}


/**
	* sizePane / manualSizePane
	* sizePane is called only by internal methods whenever a pane needs to be resized
	* manualSizePane is an exposed flow-through method allowing extra code when pane is 'manually resized'
	*
	* @param {string}	pane					The pane being resized
	* @param {number}	size					The *desired* new size for this pane - will be validated
	* @param {boolean=}	[skipCallback=false]	Should the onresize callback be run?
	* @param {boolean=}	[noAnimation=false]
	*/
,	manualSizePane = function (evt_or_pane, size, skipCallback, noAnimation) {
    if (!isInitialized()) return;
    var	pane = evtPane.call(this, evt_or_pane)
    ,	o	= options[pane]
    ,	s	= state[pane]
    //	if resizing callbacks have been delayed and resizing is now DONE, force resizing to complete...
    ,	forceResize = o.livePaneResizing && !s.isResizing
    ;
    // ANY call to manualSizePane disables autoResize - ie, percentage sizing
    o.autoResize = false;
    // flow-through...
    sizePane(pane, size, skipCallback, forceResize, noAnimation); // will animate resize if option enabled
}

/**
	* @param {string}	pane					The pane being resized
	* @param {number}	size					The *desired* new size for this pane - will be validated
	* @param {boolean=}	[skipCallback=false]	Should the onresize callback be run?
	* @param {boolean=}	[force=false]			Force resizing even if does not seem necessary
	* @param {boolean=}	[noAnimation=false]
	*/
,	sizePane = function (evt_or_pane, size, skipCallback, force, noAnimation) {
    if (!isInitialized()) return;
    var	pane	= evtPane.call(this, evt_or_pane) // probably NEVER called from event?
    ,	o		= options[pane]
    ,	s		= state[pane]
    ,	$P		= $Ps[pane]
    ,	$R		= $Rs[pane]
    ,	side	= _c[pane].side.toLowerCase()
    ,	dimName	= _c[pane].sizeType.toLowerCase()
    ,	inset	= "inset"+ _c[pane].side
    ,	skipResizeWhileDragging = s.isResizing && !o.triggerEventsDuringLiveResize
    ,	doFX	= noAnimation !== true && o.animatePaneSizing
    ,	oldSize, newSize
    ;
    // QUEUE in case another action/animation is in progress
    $N.queue(function( queueNext ){
        // calculate 'current' min/max sizes
        setSizeLimits(pane); // update pane-state
        oldSize = s.size;
        size = _parseSize(pane, size); // handle percentages & auto
        size = max(size, _parseSize(pane, o.minSize));
        size = min(size, s.maxSize);
        if (size < s.minSize) { // not enough room for pane!
            queueNext(); // call before makePaneFit() because it needs the queue free
            makePaneFit(pane, false, skipCallback);	// will hide or close pane
            return;
        }

        // IF newSize is same as oldSize, then nothing to do - abort
        if (!force && size === oldSize)
            return queueNext();

        // onresize_start callback CANNOT cancel resizing because this would break the layout!
        if (!skipCallback && state.initialized && s.isVisible)
            _runCallbacks("onresize_start", pane);

        // resize the pane, and make sure its visible
        newSize = cssSize(pane, size);

        if (doFX && $P.is(":visible")) { // ANIMATE
            var fx		= $.layout.effects.size[pane] || $.layout.effects.size.all
            ,	easing	= o.fxSettings_size.easing || fx.easing
            ,	z		= options.zIndexes
            ,	props	= {};
            props[ dimName ] = newSize +'px';
            s.isMoving = true;
            // overlay all elements during animation
            $P.css({
                zIndex: z.pane_animate
            })
            .show().animate( props, o.fxSpeed_size, easing, function(){
                // reset zIndex after animation
                $P.css({
                    zIndex: (s.isSliding ? z.pane_sliding : z.pane_normal)
                });
                s.isMoving = false;
                sizePane_2(); // continue
                queueNext();
            });
        }
        else { // no animation
            $P.css( dimName, newSize );	// resize pane
            // if pane is visible, then 
            if ($P.is(":visible"))
                sizePane_2(); // continue
            else {
                // pane is NOT VISIBLE, so just update state data...
                // when pane is *next opened*, it will have the new size
                s.size = size;				// update state.size
                $.extend(s, elDims($P));	// update state dimensions
            }
            queueNext();
        };

    });

    // SUBROUTINE
    function sizePane_2 () {
        /*	Panes are sometimes not sized precisely in some browsers!?
			 *	This code will resize the pane up to 3 times to nudge the pane to the correct size
			 */
        var	actual	= dimName==='width' ? $P.outerWidth() : $P.outerHeight()
        ,	tries	= [{
            pane:		pane
            ,	
            count:		1
            ,	
            target:		size
            ,	
            actual:		actual
            ,	
            correct:	(size === actual)
            ,	
            attempt:	size
            ,	
            cssSize:	newSize
        }]
        ,	lastTry = tries[0]
        ,	msg		= 'Inaccurate size after resizing the '+ pane +'-pane.'
        ;
        while ( !lastTry.correct ) {
            thisTry = {
                pane: pane, 
                count: lastTry.count+1, 
                target: size
            };

            if (lastTry.actual > size)
                thisTry.attempt = max(0, lastTry.attempt - (lastTry.actual - size));
            else // lastTry.actual < size
                thisTry.attempt = max(0, lastTry.attempt + (size - lastTry.actual));

            thisTry.cssSize = cssSize(pane, thisTry.attempt);
            $P.css( dimName, thisTry.cssSize );

            thisTry.actual	= dimName=='width' ? $P.outerWidth() : $P.outerHeight();
            thisTry.correct	= (size === thisTry.actual);

            // if showDebugMessages, log attempts and alert the user of this *non-fatal error*
            if (options.showDebugMessages) {
                if ( tries.length === 1) {
                    _log(msg, false);
                    _log(lastTry, false);
                }
                _log(thisTry, false);
            }

            // after 4 tries, is as close as its gonna get!
            if (tries.length > 3) break;

            tries.push( thisTry );
            lastTry = tries[ tries.length - 1 ];
        }
        // END TESTING CODE

        // update pane-state dimensions
        s.size	= size;
        $.extend(s, elDims($P));

        if (s.isVisible && $P.is(":visible")) {
            // reposition the resizer-bar
            if ($R) $R.css( side, size + sC[inset] );
            // resize the content-div
            sizeContent(pane);
        }

        if (!skipCallback && !skipResizeWhileDragging && state.initialized && s.isVisible)
            _runCallbacks("onresize_end", pane);

        // resize all the adjacent panes, and adjust their toggler buttons
        // when skipCallback passed, it means the controlling method will handle 'other panes'
        if (!skipCallback) {
            // also no callback if live-resize is in progress and NOT triggerEventsDuringLiveResize
            if (!s.isSliding) sizeMidPanes(_c[pane].dir=="horz" ? "" : "center", skipResizeWhileDragging, force);
            sizeHandles();
        }

        // if opposite-pane was autoClosed, see if it can be autoOpened now
        var altPane = _c.oppositeEdge[pane];
        if (size < oldSize && state[ altPane ].noRoom) {
            setSizeLimits( altPane );
            makePaneFit( altPane, false, skipCallback );
        }

        // DEBUG - ALERT user/developer so they know there was a sizing problem
        if (options.showDebugMessages && tries.length > 1)
            _log(msg +'\nSee the Error Console for details.', true);
    }
}

/**
	* @see  initPanes(), sizePane(), resizeAll(), open(), close(), hide()
	* @param {string}	panes					The pane(s) being resized, comma-delmited string
	* @param {boolean=}	[skipCallback=false]	Should the onresize callback be run?
	* @param {boolean=}	[force=false]
	*/
,	sizeMidPanes = function (panes, skipCallback, force) {
    panes = (panes ? panes : "east,west,center").split(",");

    $.each(panes, function (i, pane) {
        if (!$Ps[pane]) return; // NO PANE - skip
        var 
        o		= options[pane]
        ,	s		= state[pane]
        ,	$P		= $Ps[pane]
        ,	$R		= $Rs[pane]
        ,	isCenter= (pane=="center")
        ,	hasRoom	= true
        ,	CSS		= {}
        ,	newCenter	= calcNewCenterPaneDims()
        ;
        // update pane-state dimensions
        $.extend(s, elDims($P));

        if (pane === "center") {
            if (!force && s.isVisible && newCenter.width === s.outerWidth && newCenter.height === s.outerHeight)
                return true; // SKIP - pane already the correct size
            // set state for makePaneFit() logic
            $.extend(s, cssMinDims(pane), {
                maxWidth:	newCenter.width
                ,	
                maxHeight:	newCenter.height
            });
            CSS = newCenter;
            // convert OUTER width/height to CSS width/height 
            CSS.width	= cssW($P, CSS.width);
            // NEW - allow pane to extend 'below' visible area rather than hide it
            CSS.height	= cssH($P, CSS.height);
            hasRoom		= CSS.width >= 0 && CSS.height >= 0; // height >= 0 = ALWAYS TRUE NOW
            // during layout init, try to shrink east/west panes to make room for center
            if (!state.initialized && o.minWidth > s.outerWidth) {
                var
                reqPx	= o.minWidth - s.outerWidth
                ,	minE	= options.east.minSize || 0
                ,	minW	= options.west.minSize || 0
                ,	sizeE	= state.east.size
                ,	sizeW	= state.west.size
                ,	newE	= sizeE
                ,	newW	= sizeW
                ;
                if (reqPx > 0 && state.east.isVisible && sizeE > minE) {
                    newE = max( sizeE-minE, sizeE-reqPx );
                    reqPx -= sizeE-newE;
                }
                if (reqPx > 0 && state.west.isVisible && sizeW > minW) {
                    newW = max( sizeW-minW, sizeW-reqPx );
                    reqPx -= sizeW-newW;
                }
                // IF we found enough extra space, then resize the border panes as calculated
                if (reqPx === 0) {
                    if (sizeE != minE)
                        sizePane('east', newE, true, force, true); // true = skipCallback/noAnimation - initPanes will handle when done
                    if (sizeW != minW)
                        sizePane('west', newW, true, force, true);
                    // now start over!
                    sizeMidPanes('center', skipCallback, force);
                    return; // abort this loop
                }
            }
        }
        else { // for east and west, set only the height, which is same as center height
            // set state.min/maxWidth/Height for makePaneFit() logic
            if (s.isVisible && !s.noVerticalRoom)
                $.extend(s, elDims($P), cssMinDims(pane))
            if (!force && !s.noVerticalRoom && newCenter.height === s.outerHeight)
                return true; // SKIP - pane already the correct size
            // east/west have same top, bottom & height as center
            CSS.top		= newCenter.top;
            CSS.bottom	= newCenter.bottom;
            // NEW - allow pane to extend 'below' visible area rather than hide it
            CSS.height	= cssH($P, newCenter.height);
            s.maxHeight	= CSS.height;
            hasRoom		= (s.maxHeight >= 0); // ALWAYS TRUE NOW
            if (!hasRoom) s.noVerticalRoom = true; // makePaneFit() logic
        }

        if (hasRoom) {
            // resizeAll passes skipCallback because it triggers callbacks after ALL panes are resized
            if (!skipCallback && state.initialized)
                _runCallbacks("onresize_start", pane);

            $P.css(CSS); // apply the CSS to pane
            sizeHandles(pane); // also update resizer length
            if (s.noRoom && !s.isClosed && !s.isHidden)
                makePaneFit(pane); // will re-open/show auto-closed/hidden pane
            if (s.isVisible) {
                $.extend(s, elDims($P)); // update pane dimensions
                if (state.initialized) sizeContent(pane); // also resize the contents, if exists
            }
        }
        else if (!s.noRoom && s.isVisible) // no room for pane
            makePaneFit(pane); // will hide or close pane

        if (!s.isVisible)
            return true; // DONE - next pane

        /*
			* Extra CSS for IE6 or IE7 in Quirks-mode - add 'width' to NORTH/SOUTH panes
			* Normally these panes have only 'left' & 'right' positions so pane auto-sizes
			* ALSO required when pane is an IFRAME because will NOT default to 'full width'
			*/
        if (pane === "center") { // finished processing midPanes
            var b = $.layout.browser;
            var fix = b.isIE6 || (b.msie && !$.support.boxModel);
            if ($Ps.north && (fix || state.north.tagName=="IFRAME")) 
                $Ps.north.css("width", cssW($Ps.north, sC.innerWidth));
            if ($Ps.south && (fix || state.south.tagName=="IFRAME"))
                $Ps.south.css("width", cssW($Ps.south, sC.innerWidth));
        }

        // resizeAll passes skipCallback because it triggers callbacks after ALL panes are resized
        if (!skipCallback && state.initialized)
            _runCallbacks("onresize_end", pane);
    });
}


/**
	* @see  window.onresize(), callbacks or custom code
	*/
,	resizeAll = function () {
    if (!state.initialized) {
        _initLayoutElements();
        return; // no need to resize since we just initialized!
    }
    var	oldW	= sC.innerWidth
    ,	oldH	= sC.innerHeight
    ;
    // cannot size layout when 'container' is hidden or collapsed
    if (!$N.is(":visible:") ) return;
    $.extend( state.container, elDims( $N ) ); // UPDATE container dimensions
    if (!sC.outerHeight) return;

    // onresizeall_start will CANCEL resizing if returns false
    // state.container has already been set, so user can access this info for calcuations
    if (false === _runCallbacks("onresizeall_start")) return false;

    var	// see if container is now 'smaller' than before
    shrunkH	= (sC.innerHeight < oldH)
    ,	shrunkW	= (sC.innerWidth < oldW)
    ,	$P, o, s, dir
    ;
    // NOTE special order for sizing: S-N-E-W
    $.each(["south","north","east","west"], function (i, pane) {
        if (!$Ps[pane]) return; // no pane - SKIP
        s	= state[pane];
        o	= options[pane];
        dir	= _c[pane].dir;

        if (o.autoResize && s.size != o.size) // resize pane to original size set in options
            sizePane(pane, o.size, true, true, true); // true=skipCallback/forceResize/noAnimation
        else {
            setSizeLimits(pane);
            makePaneFit(pane, false, true, true); // true=skipCallback/forceResize
        }
    });

    sizeMidPanes("", true, true); // true=skipCallback, true=forceResize
    sizeHandles(); // reposition the toggler elements

    // trigger all individual pane callbacks AFTER layout has finished resizing
    o = options; // reuse alias
    $.each(_c.allPanes, function (i, pane) {
        $P = $Ps[pane];
        if (!$P) return; // SKIP
        if (state[pane].isVisible) // undefined for non-existent panes
            _runCallbacks("onresize_end", pane); // callback - if exists
    });

    _runCallbacks("onresizeall_end");
//_triggerLayoutEvent(pane, 'resizeall');
}

/**
	* Whenever a pane resizes or opens that has a nested layout, trigger resizeAll
	*
	* @param {string}	pane		The pane just resized or opened
	*/
,	resizeChildLayout = function (evt_or_pane) {
    var	pane = evtPane.call(this, evt_or_pane);
    if (!options[pane].resizeChildLayout) return;
    var	$P	= $Ps[pane]
    ,	$C	= $Cs[pane]
    ,	d	= "layout"
    ,	P	= Instance[pane]
    ,	L	= children[pane]
    ;
    // user may have manually set EITHER instance pointer, so handle that
    if (P.child && !L) {
        // have to reverse the pointers!
        var el = P.child.container;
        L = children[pane] = (el ? el.data(d) : 0) || null; // set pointer _directly_ to layout instance
    }

    // if a layout-pointer exists, see if child has been destroyed
    if (L && L.destroyed)
        L = children[pane] = null; // clear child pointers
    // no child layout pointer is set - see if there is a child layout NOW
    if (!L)	L = children[pane] = $P.data(d) || ($C ? $C.data(d) : 0) || null; // set/update child pointers

    // ALWAYS refresh the pane.child alias
    P.child = children[pane];

    if (L) L.resizeAll();
}


/**
	* IF pane has a content-div, then resize all elements inside pane to fit pane-height
	*
	* @param {string=}	[panes=""]		The pane(s) being resized
	* @param {boolean=}	[remeasure=false]	Should the content (header/footer) be remeasured?
	*/
,	sizeContent = function (evt_or_panes, remeasure) {
    if (!isInitialized()) return;

    var panes = evtPane.call(this, evt_or_panes);
    panes = panes ? panes.split(",") : _c.allPanes;

    $.each(panes, function (idx, pane) {
        var
        $P	= $Ps[pane]
        ,	$C	= $Cs[pane]
        ,	o	= options[pane]
        ,	s	= state[pane]
        ,	m	= s.content // m = measurements
        ;
        if (!$P || !$C || !$P.is(":visible")) return true; // NOT VISIBLE - skip

        // if content-element was REMOVED, update OR remove the pointer
        if (!$C.length) {
            initContent(pane, false);	// false = do NOT sizeContent() - already there!
            if (!$C) return;			// no replacement element found - pointer have been removed
        }

        // onsizecontent_start will CANCEL resizing if returns false
        if (false === _runCallbacks("onsizecontent_start", pane)) return;

        // skip re-measuring offsets if live-resizing
        if ((!s.isMoving && !s.isResizing) || o.liveContentResizing || remeasure || m.top == undefined) {
            _measure();
            // if any footers are below pane-bottom, they may not measure correctly,
            // so allow pane overflow and re-measure
            if (m.hiddenFooters > 0 && $P.css("overflow") === "hidden") {
                $P.css("overflow", "visible");
                _measure(); // remeasure while overflowing
                $P.css("overflow", "hidden");
            }
        }
        // NOTE: spaceAbove/Below *includes* the pane paddingTop/Bottom, but not pane.borders
        var newH = s.innerHeight - (m.spaceAbove - s.css.paddingTop) - (m.spaceBelow - s.css.paddingBottom);

        if (!$C.is(":visible") || m.height != newH) {
            // size the Content element to fit new pane-size - will autoHide if not enough room
            setOuterHeight($C, newH, true); // true=autoHide
            m.height = newH; // save new height
        };

        if (state.initialized)
            _runCallbacks("onsizecontent_end", pane);

        function _below ($E) {
            return max(s.css.paddingBottom, (parseInt($E.css("marginBottom"), 10) || 0));
        };

        function _measure () {
            var
            ignore	= options[pane].contentIgnoreSelector
            ,	$Fs		= $C.nextAll().not(ignore || ':lt(0)') // not :lt(0) = ALL
            ,	$Fs_vis	= $Fs.filter(':visible')
            ,	$F		= $Fs_vis.filter(':last')
            ;
            m = {
                top:			$C[0].offsetTop
                ,	
                height:			$C.outerHeight()
                ,	
                numFooters:		$Fs.length
                ,	
                hiddenFooters:	$Fs.length - $Fs_vis.length
                ,	
                spaceBelow:		0 // correct if no content footer ($E)
            }
            m.spaceAbove	= m.top; // just for state - not used in calc
            m.bottom		= m.top + m.height;
            if ($F.length)
                //spaceBelow = (LastFooter.top + LastFooter.height) [footerBottom] - Content.bottom + max(LastFooter.marginBottom, pane.paddingBotom)
                m.spaceBelow = ($F[0].offsetTop + $F.outerHeight()) - m.bottom + _below($F);
            else // no footer - check marginBottom on Content element itself
                m.spaceBelow = _below($C);
        };
    });
}


/**
	* Called every time a pane is opened, closed, or resized to slide the togglers to 'center' and adjust their length if necessary
	*
	* @see  initHandles(), open(), close(), resizeAll()
	* @param {string=}	[panes=""]		The pane(s) being resized
	*/
,	sizeHandles = function (evt_or_panes) {
    var panes = evtPane.call(this, evt_or_panes)
    panes = panes ? panes.split(",") : _c.borderPanes;

    $.each(panes, function (i, pane) {
        var 
        o	= options[pane]
        ,	s	= state[pane]
        ,	$P	= $Ps[pane]
        ,	$R	= $Rs[pane]
        ,	$T	= $Ts[pane]
        ,	$TC
        ;
        if (!$P || !$R) return;

        var
        dir			= _c[pane].dir
        ,	_state		= (s.isClosed ? "_closed" : "_open")
        ,	spacing		= o["spacing"+ _state]
        ,	togAlign	= o["togglerAlign"+ _state]
        ,	togLen		= o["togglerLength"+ _state]
        ,	paneLen
        ,	left
        ,	offset
        ,	CSS = {}
        ;

        if (spacing === 0) {
            $R.hide();
            return;
        }
        else if (!s.noRoom && !s.isHidden) // skip if resizer was hidden for any reason
            $R.show(); // in case was previously hidden

        // Resizer Bar is ALWAYS same width/height of pane it is attached to
        if (dir === "horz") { // north/south
            //paneLen = $P.outerWidth(); // s.outerWidth || 
            paneLen = sC.innerWidth; // handle offscreen-panes
            s.resizerLength = paneLen;
            left = $.layout.cssNum($P, "left")
            $R.css({
                width:	cssW($R, paneLen) // account for borders & padding
                ,	
                height:	cssH($R, spacing) // ditto
                ,	
                left:	left > -9999 ? left : sC.insetLeft // handle offscreen-panes
            });
        }
        else { // east/west
            paneLen = $P.outerHeight(); // s.outerHeight || 
            s.resizerLength = paneLen;
            $R.css({
                height:	cssH($R, paneLen) // account for borders & padding
                ,	
                width:	cssW($R, spacing) // ditto
                ,	
                top:	sC.insetTop + getPaneSize("north", true) // TODO: what if no North pane?
            //,	top:	$.layout.cssNum($Ps["center"], "top")
            });
        }

        // remove hover classes
        removeHover( o, $R );

        if ($T) {
            if (togLen === 0 || (s.isSliding && o.hideTogglerOnSlide)) {
                $T.hide(); // always HIDE the toggler when 'sliding'
                return;
            }
            else
                $T.show(); // in case was previously hidden

            if (!(togLen > 0) || togLen === "100%" || togLen > paneLen) {
                togLen = paneLen;
                offset = 0;
            }
            else { // calculate 'offset' based on options.PANE.togglerAlign_open/closed
                if (isStr(togAlign)) {
                    switch (togAlign) {
                        case "top":
                        case "left":
                            offset = 0;
                            break;
                        case "bottom":
                        case "right":
                            offset = paneLen - togLen;
                            break;
                        case "middle":
                        case "center":
                        default:
                            offset = round((paneLen - togLen) / 2); // 'default' catches typos
                    }
                }
                else { // togAlign = number
                    var x = parseInt(togAlign, 10); //
                    if (togAlign >= 0) offset = x;
                    else offset = paneLen - togLen + x; // NOTE: x is negative!
                }
            }

            if (dir === "horz") { // north/south
                var width = cssW($T, togLen);
                $T.css({
                    width:	width  // account for borders & padding
                    ,	
                    height:	cssH($T, spacing) // ditto
                    ,	
                    left:	offset // TODO: VERIFY that toggler  positions correctly for ALL values
                    ,	
                    top:	0
                });
                // CENTER the toggler content SPAN
                $T.children(".content").each(function(){
                    $TC = $(this);
                    $TC.css("marginLeft", round((width-$TC.outerWidth())/2)); // could be negative
                });
            }
            else { // east/west
                var height = cssH($T, togLen);
                $T.css({
                    height:	height // account for borders & padding
                    ,	
                    width:	cssW($T, spacing) // ditto
                    ,	
                    top:	offset // POSITION the toggler
                    ,	
                    left:	0
                });
                // CENTER the toggler content SPAN
                $T.children(".content").each(function(){
                    $TC = $(this);
                    $TC.css("marginTop", round((height-$TC.outerHeight())/2)); // could be negative
                });
            }

            // remove ALL hover classes
            removeHover( 0, $T );
        }

        // DONE measuring and sizing this resizer/toggler, so can be 'hidden' now
        if (!state.initialized && (o.initHidden || s.noRoom)) {
            $R.hide();
            if ($T) $T.hide();
        }
    });
}


/**
	* @param {string}	pane
	*/
,	enableClosable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var	pane = evtPane.call(this, evt_or_pane)
    ,	$T	= $Ts[pane]
    ,	o	= options[pane]
    ;
    if (!$T) return;
    o.closable = true;
    $T	.bind("click."+ sID, function(evt){
        evt.stopPropagation();
        toggle(pane);
    })
    .css("visibility", "visible")
    .css("cursor", "pointer")
    .attr("title", state[pane].isClosed ? o.togglerTip_closed : o.togglerTip_open) // may be blank
    .show();
}
/**
	* @param {string}	pane
	* @param {boolean=}	[hide=false]
	*/
,	disableClosable = function (evt_or_pane, hide) {
    if (!isInitialized()) return;
    var	pane = evtPane.call(this, evt_or_pane)
    ,	$T	= $Ts[pane]
    ;
    if (!$T) return;
    options[pane].closable = false;
    // is closable is disable, then pane MUST be open!
    if (state[pane].isClosed) open(pane, false, true);
    $T	.unbind("."+ sID)
    .css("visibility", hide ? "hidden" : "visible") // instead of hide(), which creates logic issues
    .css("cursor", "default")
    .attr("title", "");
}


/**
	* @param {string}	pane
	*/
,	enableSlidable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var	pane = evtPane.call(this, evt_or_pane)
    ,	$R	= $Rs[pane]
    ;
    if (!$R || !$R.data('draggable')) return;
    options[pane].slidable = true; 
    if (s.isClosed)
        bindStartSlidingEvent(pane, true);
}
/**
	* @param {string}	pane
	*/
,	disableSlidable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var	pane = evtPane.call(this, evt_or_pane)
    ,	$R	= $Rs[pane]
    ;
    if (!$R) return;
    options[pane].slidable = false; 
    if (state[pane].isSliding)
        close(pane, false, true);
    else {
        bindStartSlidingEvent(pane, false);
        $R	.css("cursor", "default")
        .attr("title", "");
        removeHover(null, $R[0]); // in case currently hovered
    }
}


/**
	* @param {string}	pane
	*/
,	enableResizable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var	pane = evtPane.call(this, evt_or_pane)
    ,	$R	= $Rs[pane]
    ,	o	= options[pane]
    ;
    if (!$R || !$R.data('draggable')) return;
    o.resizable = true; 
    $R.draggable("enable");
    if (!state[pane].isClosed)
        $R	.css("cursor", o.resizerCursor)
        .attr("title", o.resizerTip);
}
/**
	* @param {string}	pane
	*/
,	disableResizable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var	pane = evtPane.call(this, evt_or_pane)
    ,	$R	= $Rs[pane]
    ;
    if (!$R || !$R.data('draggable')) return;
    options[pane].resizable = false; 
    $R	.draggable("disable")
    .css("cursor", "default")
    .attr("title", "");
    removeHover(null, $R[0]); // in case currently hovered
}


/**
	* Move a pane from source-side (eg, west) to target-side (eg, east)
	* If pane exists on target-side, move that to source-side, ie, 'swap' the panes
	*
	* @param {string}	pane1		The pane/edge being swapped
	* @param {string}	pane2		ditto
	*/
,	swapPanes = function (evt_or_pane1, pane2) {
    if (!isInitialized()) return;
    var pane1 = evtPane.call(this, evt_or_pane1);
    // change state.edge NOW so callbacks can know where pane is headed...
    state[pane1].edge = pane2;
    state[pane2].edge = pane1;
    // run these even if NOT state.initialized
    if (false === _runCallbacks("onswap_start", pane1)
        ||	false === _runCallbacks("onswap_start", pane2)
        ) {
        state[pane1].edge = pane1; // reset
        state[pane2].edge = pane2;
        return;
    }

    var
    oPane1	= copy( pane1 )
    ,	oPane2	= copy( pane2 )
    ,	sizes	= {}
    ;
    sizes[pane1] = oPane1 ? oPane1.state.size : 0;
    sizes[pane2] = oPane2 ? oPane2.state.size : 0;

    // clear pointers & state
    $Ps[pane1] = false; 
    $Ps[pane2] = false;
    state[pane1] = {};
    state[pane2] = {};
		
    // ALWAYS remove the resizer & toggler elements
    if ($Ts[pane1]) $Ts[pane1].remove();
    if ($Ts[pane2]) $Ts[pane2].remove();
    if ($Rs[pane1]) $Rs[pane1].remove();
    if ($Rs[pane2]) $Rs[pane2].remove();
    $Rs[pane1] = $Rs[pane2] = $Ts[pane1] = $Ts[pane2] = false;

    // transfer element pointers and data to NEW Layout keys
    move( oPane1, pane2 );
    move( oPane2, pane1 );

    // cleanup objects
    oPane1 = oPane2 = sizes = null;

    // make panes 'visible' again
    if ($Ps[pane1]) $Ps[pane1].css(_c.visible);
    if ($Ps[pane2]) $Ps[pane2].css(_c.visible);

    // fix any size discrepancies caused by swap
    resizeAll();

    // run these even if NOT state.initialized
    _runCallbacks("onswap_end", pane1);
    _runCallbacks("onswap_end", pane2);

    return;

    function copy (n) { // n = pane
        var
        $P	= $Ps[n]
        ,	$C	= $Cs[n]
        ;
        return !$P ? false : {
            pane:		n
            ,	
            P:			$P ? $P[0] : false
            ,	
            C:			$C ? $C[0] : false
            ,	
            state:		$.extend(true, {}, state[n])
            ,	
            options:	$.extend(true, {}, options[n])
        }
    };

    function move (oPane, pane) {
        if (!oPane) return;
        var
        P		= oPane.P
        ,	C		= oPane.C
        ,	oldPane = oPane.pane
        ,	c		= _c[pane]
        ,	side	= c.side.toLowerCase()
        ,	inset	= "inset"+ c.side
        //	save pane-options that should be retained
        ,	s		= $.extend({}, state[pane])
        ,	o		= options[pane]
        //	RETAIN side-specific FX Settings - more below
        ,	fx		= {
            resizerCursor: o.resizerCursor
        }
        ,	re, size, pos
        ;
        $.each("fxName,fxSpeed,fxSettings".split(","), function (i, k) {
            fx[k +"_open"]  = o[k +"_open"];
            fx[k +"_close"] = o[k +"_close"];
            fx[k +"_size"]  = o[k +"_size"];
        });

        // update object pointers and attributes
        $Ps[pane] = $(P)
        .data({
            layoutPane:		Instance[pane]	// NEW pointer to pane-alias-object
            ,	
            layoutEdge:		pane
        })
        .css(_c.hidden)
        .css(c.cssReq)
        ;
        $Cs[pane] = C ? $(C) : false;

        // set options and state
        options[pane]	= $.extend({}, oPane.options, fx);
        state[pane]		= $.extend({}, oPane.state);

        // change classNames on the pane, eg: ui-layout-pane-east ==> ui-layout-pane-west
        re = new RegExp(o.paneClass +"-"+ oldPane, "g");
        P.className = P.className.replace(re, o.paneClass +"-"+ pane);

        // ALWAYS regenerate the resizer & toggler elements
        initHandles(pane); // create the required resizer & toggler

        // if moving to different orientation, then keep 'target' pane size
        if (c.dir != _c[oldPane].dir) {
            size = sizes[pane] || 0;
            setSizeLimits(pane); // update pane-state
            size = max(size, state[pane].minSize);
            // use manualSizePane to disable autoResize - not useful after panes are swapped
            manualSizePane(pane, size, true, true); // true/true = skipCallback/noAnimation
        }
        else // move the resizer here
            $Rs[pane].css(side, sC[inset] + (state[pane].isVisible ? getPaneSize(pane) : 0));


        // ADD CLASSNAMES & SLIDE-BINDINGS
        if (oPane.state.isVisible && !s.isVisible)
            setAsOpen(pane, true); // true = skipCallback
        else {
            setAsClosed(pane);
            bindStartSlidingEvent(pane, true); // will enable events IF option is set
        }

        // DESTROY the object
        oPane = null;
    };
}


/**
	* INTERNAL method to sync pin-buttons when pane is opened or closed
	* Unpinned means the pane is 'sliding' - ie, over-top of the adjacent panes
	*
	* @see  open(), setAsOpen(), setAsClosed()
	* @param {string}	pane   These are the params returned to callbacks by layout()
	* @param {boolean}	doPin  True means set the pin 'down', False means 'up'
	*/
,	syncPinBtns = function (pane, doPin) {
    if ($.layout.plugins.buttons)
        $.each(state[pane].pins, function (i, selector) {
            $.layout.buttons.setPinState(Instance, $(selector), pane, doPin);
        });
}

;	// END var DECLARATIONS

/**
	* Capture keys when enableCursorHotkey - toggle pane if hotkey pressed
	*
	* @see  document.keydown()
	*/
function keyDown (evt) {
    if (!evt) return true;
    var code = evt.keyCode;
    if (code < 33) return true; // ignore special keys: ENTER, TAB, etc

    var
    PANE = {
        38: "north" // Up Cursor	- $.ui.keyCode.UP
        ,	
        40: "south" // Down Cursor	- $.ui.keyCode.DOWN
        ,	
        37: "west"  // Left Cursor	- $.ui.keyCode.LEFT
        ,	
        39: "east"  // Right Cursor	- $.ui.keyCode.RIGHT
    }
    ,	ALT		= evt.altKey // no worky!
    ,	SHIFT	= evt.shiftKey
    ,	CTRL	= evt.ctrlKey
    ,	CURSOR	= (CTRL && code >= 37 && code <= 40)
    ,	o, k, m, pane
    ;

    if (CURSOR && options[PANE[code]].enableCursorHotkey) // valid cursor-hotkey
        pane = PANE[code];
    else if (CTRL || SHIFT) // check to see if this matches a custom-hotkey
        $.each(_c.borderPanes, function (i, p) { // loop each pane to check its hotkey
            o = options[p];
            k = o.customHotkey;
            m = o.customHotkeyModifier; // if missing or invalid, treated as "CTRL+SHIFT"
            if ((SHIFT && m=="SHIFT") || (CTRL && m=="CTRL") || (CTRL && SHIFT)) { // Modifier matches
                if (k && code === (isNaN(k) || k <= 9 ? k.toUpperCase().charCodeAt(0) : k)) { // Key matches
                    pane = p;
                    return false; // BREAK
                }
            }
        });

    // validate pane
    if (!pane || !$Ps[pane] || !options[pane].closable || state[pane].isHidden)
        return true;

    toggle(pane);

    evt.stopPropagation();
    evt.returnValue = false; // CANCEL key
    return false;
};


/*
 * ######################################
 *	UTILITY METHODS
 *	called externally or by initButtons
 * ######################################
 */

/**
	* Change/reset a pane overflow setting & zIndex to allow popups/drop-downs to work
	*
	* @param {Object=}   [el]	(optional) Can also be 'bound' to a click, mouseOver, or other event
	*/
function allowOverflow (el) {
    if (!isInitialized()) return;
    if (this && this.tagName) el = this; // BOUND to element
    var $P;
    if (isStr(el))
        $P = $Ps[el];
    else if ($(el).data("layoutRole"))
        $P = $(el);
    else
        $(el).parents().each(function(){
            if ($(this).data("layoutRole")) {
                $P = $(this);
                return false; // BREAK
            }
        });
    if (!$P || !$P.length) return; // INVALID

    var
    pane	= $P.data("layoutEdge")
    ,	s		= state[pane]
    ;

    // if pane is already raised, then reset it before doing it again!
    // this would happen if allowOverflow is attached to BOTH the pane and an element 
    if (s.cssSaved)
        resetOverflow(pane); // reset previous CSS before continuing

    // if pane is raised by sliding or resizing, or its closed, then abort
    if (s.isSliding || s.isResizing || s.isClosed) {
        s.cssSaved = false;
        return;
    }

    var
    newCSS	= {
        zIndex: (options.zIndexes.resizer_normal + 1)
    }
    ,	curCSS	= {}
    ,	of		= $P.css("overflow")
    ,	ofX		= $P.css("overflowX")
    ,	ofY		= $P.css("overflowY")
    ;
    // determine which, if any, overflow settings need to be changed
    if (of != "visible") {
        curCSS.overflow = of;
        newCSS.overflow = "visible";
    }
    if (ofX && !ofX.match(/visible|auto/)) {
        curCSS.overflowX = ofX;
        newCSS.overflowX = "visible";
    }
    if (ofY && !ofY.match(/visible|auto/)) {
        curCSS.overflowY = ofX;
        newCSS.overflowY = "visible";
    }

    // save the current overflow settings - even if blank!
    s.cssSaved = curCSS;

    // apply new CSS to raise zIndex and, if necessary, make overflow 'visible'
    $P.css( newCSS );

    // make sure the zIndex of all other panes is normal
    $.each(_c.allPanes, function(i, p) {
        if (p != pane) resetOverflow(p);
    });

};
/**
	* @param {Object=}   [el]	(optional) Can also be 'bound' to a click, mouseOver, or other event
	*/
function resetOverflow (el) {
    if (!isInitialized()) return;
    if (this && this.tagName) el = this; // BOUND to element
    var $P;
    if (isStr(el))
        $P = $Ps[el];
    else if ($(el).data("layoutRole"))
        $P = $(el);
    else
        $(el).parents().each(function(){
            if ($(this).data("layoutRole")) {
                $P = $(this);
                return false; // BREAK
            }
        });
    if (!$P || !$P.length) return; // INVALID

    var
    pane	= $P.data("layoutEdge")
    ,	s		= state[pane]
    ,	CSS		= s.cssSaved || {}
    ;
    // reset the zIndex
    if (!s.isSliding && !s.isResizing)
        $P.css("zIndex", options.zIndexes.pane_normal);

    // reset Overflow - if necessary
    $P.css( CSS );

    // clear var
    s.cssSaved = false;
};

/*
 * #####################
 * CREATE/RETURN LAYOUT
 * #####################
 */

// validate that container exists
var $N = $(this).eq(0); // FIRST matching Container element
    if (!$N.length) {
        if (options.showErrorMessages)
            _log( lang.errContainerMissing, true );
        return null;
    };

    // Users retrieve Instance of a layout with: $N.layout() OR $N.data("layout")
    // return the Instance-pointer if layout has already been initialized
    if ($N.data("layoutContainer") && $N.data("layout"))
        return $N.data("layout"); // cached pointer

    // init global vars
    var 
    $Ps	= {}	// Panes x5		- set in initPanes()
    ,	$Cs	= {}	// Content x5	- set in initPanes()
    ,	$Rs	= {}	// Resizers x4	- set in initHandles()
    ,	$Ts	= {}	// Togglers x4	- set in initHandles()
    ,	$Ms	= $([])	// Masks - up to 2 masks per pane (IFRAME + DIV)
    //	aliases for code brevity
    ,	sC	= state.container // alias for easy access to 'container dimensions'
    ,	sID	= state.id // alias for unique layout ID/namespace - eg: "layout435"
    ;

    // create Instance object to expose data & option Properties, and primary action Methods
    var Instance = {
        //	layout data
        options:			options			// property - options hash
        ,	
        state:				state			// property - dimensions hash
        //	object pointers
        ,	
        container:			$N				// property - object pointers for layout container
        ,	
        panes:				$Ps				// property - object pointers for ALL Panes: panes.north, panes.center
        ,	
        contents:			$Cs				// property - object pointers for ALL Content: contents.north, contents.center
        ,	
        resizers:			$Rs				// property - object pointers for ALL Resizers, eg: resizers.north
        ,	
        togglers:			$Ts				// property - object pointers for ALL Togglers, eg: togglers.north
        //	border-pane open/close
        ,	
        hide:				hide			// method - ditto
        ,	
        show:				show			// method - ditto
        ,	
        toggle:				toggle			// method - pass a 'pane' ("north", "west", etc)
        ,	
        open:				open			// method - ditto
        ,	
        close:				close			// method - ditto
        ,	
        slideOpen:			slideOpen		// method - ditto
        ,	
        slideClose:			slideClose		// method - ditto
        ,	
        slideToggle:		slideToggle		// method - ditto
        //	pane actions
        ,	
        setSizeLimits:		setSizeLimits	// method - pass a 'pane' - update state min/max data
        ,	
        _sizePane:			sizePane		// method -intended for user by plugins only!
        ,	
        sizePane:			manualSizePane	// method - pass a 'pane' AND an 'outer-size' in pixels or percent, or 'auto'
        ,	
        sizeContent:		sizeContent		// method - pass a 'pane'
        ,	
        swapPanes:			swapPanes		// method - pass TWO 'panes' - will swap them
        //	pane element methods
        ,	
        initContent:		initContent		// method - ditto
        ,	
        addPane:			addPane			// method - pass a 'pane'
        ,	
        removePane:			removePane		// method - pass a 'pane' to remove from layout, add 'true' to delete the pane-elem
        ,	
        createChildLayout:	createChildLayout// method - pass a 'pane' and (optional) layout-options (OVERRIDES options[pane].childOptions
        //	special pane option setting
        ,	
        enableClosable:		enableClosable	// method - pass a 'pane'
        ,	
        disableClosable:	disableClosable	// method - ditto
        ,	
        enableSlidable:		enableSlidable	// method - ditto
        ,	
        disableSlidable:	disableSlidable	// method - ditto
        ,	
        enableResizable:	enableResizable	// method - ditto
        ,	
        disableResizable:	disableResizable// method - ditto
        //	utility methods for panes
        ,	
        allowOverflow:		allowOverflow	// utility - pass calling element (this)
        ,	
        resetOverflow:		resetOverflow	// utility - ditto
        //	layout control
        ,	
        destroy:			destroy			// method - no parameters
        ,	
        initPanes:			isInitialized	// method - no parameters
        ,	
        resizeAll:			resizeAll		// method - no parameters
        //	callback triggering
        ,	
        runCallbacks:		_runCallbacks	// method - pass evtName & pane (if a pane-event), eg: trigger("onopen", "west")
        //	alias collections of options, state and children - created in addPane and extended elsewhere
        ,	
        hasParentLayout:	false			// set by initContainer()
        ,	
        children:			children		// pointers to child-layouts, eg: Instance.children["west"]
        ,	
        north:				false			// alias group: { name: pane, pane: $Ps[pane], options: options[pane], state: state[pane], child: children[pane] }
        ,	
        south:				false			// ditto
        ,	
        west:				false			// ditto
        ,	
        east:				false			// ditto
        ,	
        center:				false			// ditto
    };

    // create the border layout NOW
    if (_create() === 'cancel') // onload_start callback returned false to CANCEL layout creation
        return null;
    else // true OR false -- if layout-elements did NOT init (hidden or do not exist), can auto-init later
        return Instance; // return the Instance object

}




/**
 * jquery.layout.state 1.0
 * $Date: 2011-07-16 08:00:00 (Sat, 16 July 2011) $
 *
 * Copyright (c) 2010 
 *   Kevin Dalman (http://allpro.net)
 *
 * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
 * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
 *
 * @dependancies: UI Layout 1.3.0.rc30.1 or higher
 * @dependancies: $.ui.cookie (above)
 *
 * @support: http://groups.google.com/group/jquery-ui-layout
 */
/*
 *	State-management options stored in options.stateManagement, which includes a .cookie hash
 *	Default options saves ALL KEYS for ALL PANES, ie: pane.size, pane.isClosed, pane.isHidden
 *
 *	// STATE/COOKIE OPTIONS
 *	@example $(el).layout({
				stateManagement: {
					enabled:	true
				,	stateKeys:	"east.size,west.size,east.isClosed,west.isClosed"
				,	cookie:		{ name: "appLayout", path: "/" }
				}
			})
 *	@example $(el).layout({ stateManagement__enabled: true }) // enable auto-state-management using cookies
 *	@example $(el).layout({ stateManagement__cookie: { name: "appLayout", path: "/" } })
 *	@example $(el).layout({ stateManagement__cookie__name: "appLayout", stateManagement__cookie__path: "/" })
 *
 *	// STATE/COOKIE METHODS
 *	@example myLayout.saveCookie( "west.isClosed,north.size,south.isHidden", {expires: 7} );
 *	@example myLayout.loadCookie();
 *	@example myLayout.deleteCookie();
 *	@example var JSON = myLayout.readState();	// CURRENT Layout State
 *	@example var JSON = myLayout.readCookie();	// SAVED Layout State (from cookie)
 *	@example var JSON = myLayout.state.stateData;	// LAST LOADED Layout State (cookie saved in layout.state hash)
 *
 *	CUSTOM STATE-MANAGEMENT (eg, saved in a database)
 *	@example var JSON = myLayout.readState( "west.isClosed,north.size,south.isHidden" );
 *	@example myLayout.loadState( JSON );
 */

/**
 *	UI COOKIE UTILITY
 *
 *	A $.cookie OR $.ui.cookie namespace *should be standard*, but until then...
 *	This creates $.ui.cookie so Layout does not need the cookie.jquery.js plugin
 *	NOTE: This utility is REQUIRED by the layout.state plugin
 *
 *	Cookie methods in Layout are created as part of State Management 
 */
if (!$.ui) $.ui = {};
    $.ui.cookie = {

        // cookieEnabled is not in DOM specs, but DOES works in all browsers,including IE6
        acceptsCookies: !!navigator.cookieEnabled

        ,	
        read: function (name) {
            var
            c		= document.cookie
            ,	cs		= c ? c.split(';') : []
            ,	pair	// loop var
            ;
            for (var i=0, n=cs.length; i < n; i++) {
                pair = $.trim(cs[i]).split('='); // name=value pair
                if (pair[0] == name) // found the layout cookie
                    return decodeURIComponent(pair[1]);

            }
            return null;
        }

        ,	
        write: function (name, val, cookieOpts) {
            var
            params	= ''
            ,	date	= ''
            ,	clear	= false
            ,	o		= cookieOpts || {}
            ,	x		= o.expires
            ;
            if (x && x.toUTCString)
                date = x;
            else if (x === null || typeof x === 'number') {
                date = new Date();
                if (x > 0)
                    date.setDate(date.getDate() + x);
                else {
                    date.setFullYear(1970);
                    clear = true;
                }
            }
            if (date)		params += ';expires='+ date.toUTCString();
            if (o.path)		params += ';path='+ o.path;
            if (o.domain)	params += ';domain='+ o.domain;
            if (o.secure)	params += ';secure';
            document.cookie = name +'='+ (clear ? "" : encodeURIComponent( val )) + params; // write or clear cookie
        }

        ,	
        clear: function (name) {
            $.ui.cookie.write(name, '', {
                expires: -1
            });
        }

    };
    // if cookie.jquery.js is not loaded, create an alias to replicate it
    // this may be useful to other plugins or code dependent on that plugin
    if (!$.cookie) $.cookie = function (k, v, o) {
        var C = $.ui.cookie;
        if (v === null)
            C.clear(k);
        else if (v === undefined)
            return C.read(k);
        else
            C.write(k, v, o);
    };


    // tell Layout that the state plugin is available
    $.layout.plugins.stateManagement = true;

    //	Add State-Management options to layout.defaults
    $.layout.config.optionRootKeys.push("stateManagement");
    $.layout.defaults.stateManagement = {
        enabled:	false	// true = enable state-management, even if not using cookies
        ,	
        autoSave:	true	// Save a state-cookie when page exits?
        ,	
        autoLoad:	true	// Load the state-cookie when Layout inits?
        // List state-data to save - must be pane-specific
        ,	
        stateKeys:	"north.size,south.size,east.size,west.size,"+
        "north.isClosed,south.isClosed,east.isClosed,west.isClosed,"+
        "north.isHidden,south.isHidden,east.isHidden,west.isHidden"
        ,	
        cookie: {
            name:	""	// If not specified, will use Layout.name, else just "Layout"
            ,	
            domain:	""	// blank = current domain
            ,	
            path:	""	// blank = current page, '/' = entire website
            ,	
            expires: ""	// 'days' to keep cookie - leave blank for 'session cookie'
            ,	
            secure:	false
        }
    };
    // Set stateManagement as a layout-option, NOT a pane-option
    $.layout.optionsMap.layout.push("stateManagement");

    /*
 *	State Management methods
 */
    $.layout.state = {

        /**
	 * Get the current layout state and save it to a cookie
	 *
	 * myLayout.saveCookie( keys, cookieOpts )
	 *
	 * @param {Object}			inst
	 * @param {(string|Array)=}	keys
	 * @param {Object=}			opts
	 */
        saveCookie: function (inst, keys, cookieOpts) {
            var o	= inst.options
            ,	oS	= o.stateManagement
            ,	oC	= $.extend(true, {}, oS.cookie, cookieOpts || null)
            ,	data = inst.state.stateData = inst.readState( keys || oS.stateKeys ) // read current panes-state
            ;
            $.ui.cookie.write( oC.name || o.name || "Layout", $.layout.state.encodeJSON(data), oC );
            return $.extend(true, {}, data); // return COPY of state.stateData data
        }

        /**
	 * Remove the state cookie
	 *
	 * @param {Object}	inst
	 */
        ,	
        deleteCookie: function (inst) {
            var o = inst.options;
            $.ui.cookie.clear( o.stateManagement.cookie.name || o.name || "Layout" );
        }

        /**
	 * Read & return data from the cookie - as JSON
	 *
	 * @param {Object}	inst
	 */
        ,	
        readCookie: function (inst) {
            var o = inst.options;
            var c = $.ui.cookie.read( o.stateManagement.cookie.name || o.name || "Layout" );
            // convert cookie string back to a hash and return it
            return c ? $.layout.state.decodeJSON(c) : {};
        }

        /**
	 * Get data from the cookie and USE IT to loadState
	 *
	 * @param {Object}	inst
	 */
        ,	
        loadCookie: function (inst) {
            var c = $.layout.state.readCookie(inst); // READ the cookie
            if (c) {
                inst.state.stateData = $.extend(true, {}, c); // SET state.stateData
                inst.loadState(c); // LOAD the retrieved state
            }
            return c;
        }
	
        /**
	 * Update layout options from the cookie, if one exists
	 *
	 * @param {Object}		inst
	 * @param {Object=}		stateData
	 * @param {boolean=}	animate
	 */
        ,	
        loadState: function (inst, stateData, animate) {
            stateData = $.layout.transformData( stateData ); // panes = default subkey
            if ($.isEmptyObject( stateData )) return;
            $.extend(true, inst.options, stateData); // update layout options
            // if layout has already been initialized, then UPDATE layout state
            if (inst.state.initialized) {
                var pane, vis, o, s, h, c
                ,	noAnimate = (animate===false)
                ;
                $.each($.layout.config.borderPanes, function (idx, pane) {
                    state = inst.state[pane];
                    o = stateData[ pane ];
                    if (typeof o != 'object') return; // no key, continue
                    s	= o.size;
                    c	= o.initClosed;
                    h	= o.initHidden;
                    vis	= state.isVisible;
                    // resize BEFORE opening
                    if (!vis)
                        inst.sizePane(pane, s, false, false);
                    if (h === true)			inst.hide(pane, noAnimate);
                    else if (c === false)	inst.open (pane, false, noAnimate);
                    else if (c === true)	inst.close(pane, false, noAnimate);
                    else if (h === false)	inst.show (pane, false, noAnimate);
                    // resize AFTER any other actions
                    if (vis)
                        inst.sizePane(pane, s, false, noAnimate); // animate resize if option passed
                });
            };
        }

        /**
	 * Get the *current layout state* and return it as a hash
	 *
	 * @param {Object=}			inst
	 * @param {(string|Array)=}	keys
	 */
        ,	
        readState: function (inst, keys) {
            var
            data	= {}
            ,	alt		= {
                isClosed: 'initClosed', 
                isHidden: 'initHidden'
            }
            ,	state	= inst.state
            ,	panes	= $.layout.config.allPanes
            ,	pair, pane, key, val
            ;
            if (!keys) keys = inst.options.stateManagement.stateKeys; // if called by user
            if ($.isArray(keys)) keys = keys.join(",");
            // convert keys to an array and change delimiters from '__' to '.'
            keys = keys.replace(/__/g, ".").split(',');
            // loop keys and create a data hash
            for (var i=0, n=keys.length; i < n; i++) {
                pair = keys[i].split(".");
                pane = pair[0];
                key  = pair[1];
                if ($.inArray(pane, panes) < 0) continue; // bad pane!
                val = state[ pane ][ key ];
                if (val == undefined) continue;
                if (key=="isClosed" && state[pane]["isSliding"])
                    val = true; // if sliding, then *really* isClosed
                ( data[pane] || (data[pane]={}) )[ alt[key] ? alt[key] : key ] = val;
            }
            return data;
        }

        /**
	 *	Stringify a JSON hash so can save in a cookie or db-field
	 */
        ,	
        encodeJSON: function (JSON) {
            return parse(JSON);
            function parse (h) {
                var D=[], i=0, k, v, t; // k = key, v = value
                for (k in h) {
                    v = h[k];
                    t = typeof v;
                    if (t == 'string')		// STRING - add quotes
                        v = '"'+ v +'"';
                    else if (t == 'object')	// SUB-KEY - recurse into it
                        v = parse(v);
                    D[i++] = '"'+ k +'":'+ v;
                }
                return '{'+ D.join(',') +'}';
            };
        }

        /**
	 *	Convert stringified JSON back to a hash object
	 *	@see		$.parseJSON(), adding in jQuery 1.4.1
	 */
        ,	
        decodeJSON: function (str) {
            try {
                return $.parseJSON ? $.parseJSON(str) : window["eval"]("("+ str +")") || {};            
        }
        catch (e) {
            return {};        
    }
}


,	
_create: function (inst) {
    var _	= $.layout.state;
    //	ADD State-Management plugin methods to inst
    $.extend( inst, {
        //	readCookie - update options from cookie - returns hash of cookie data
        readCookie:		function () {
            return _.readCookie(inst);
        }
        //	deleteCookie
        ,	
        deleteCookie:	function () {
            _.deleteCookie(inst);
        }
        //	saveCookie - optionally pass keys-list and cookie-options (hash)
        ,	
        saveCookie:		function (keys, cookieOpts) {
            return _.saveCookie(inst, keys, cookieOpts);
        }
        //	loadCookie - readCookie and use to loadState() - returns hash of cookie data
        ,	
        loadCookie:		function () {
            return _.loadCookie(inst);
        }
        //	loadState - pass a hash of state to use to update options
        ,	
        loadState:		function (stateData, animate) {
            _.loadState(inst, stateData, animate);
        }
        //	readState - returns hash of current layout-state
        ,	
        readState:		function (keys) {
            return _.readState(inst, keys);
        }
        //	add JSON utility methods too...
        ,	
        encodeJSON:		_.encodeJSON
        ,	
        decodeJSON:		_.decodeJSON
    });

    // init state.stateData key, even if plugin is initially disabled
    inst.state.stateData = {};

    // read and load cookie-data per options
    var oS = inst.options.stateManagement;
    if (oS.enabled) {
        if (oS.autoLoad) // update the options from the cookie
            inst.loadCookie();
        else // don't modify options - just store cookie data in state.stateData
            inst.state.stateData = inst.readCookie();
    }
}

,	
_unload: function (inst) {
    var oS = inst.options.stateManagement;
    if (oS.enabled) {
        if (oS.autoSave) // save a state-cookie automatically
            inst.saveCookie();
        else // don't save a cookie, but do store state-data in state.stateData key
            inst.state.stateData = inst.readState();
    }
}

};

// add state initialization method to Layout's onCreate array of functions
$.layout.onCreate.push( $.layout.state._create );
$.layout.onUnload.push( $.layout.state._unload );




/**
 * jquery.layout.buttons 1.0
 * $Date: 2011-07-16 08:00:00 (Sat, 16 July 2011) $
 *
 * Copyright (c) 2010 
 *   Kevin Dalman (http://allpro.net)
 *
 * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
 * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
 *
 * @dependancies: UI Layout 1.3.0.rc30.1 or higher
 *
 * @support: http://groups.google.com/group/jquery-ui-layout
 *
 * Docs: [ to come ]
 * Tips: [ to come ]
 */

// tell Layout that the state plugin is available
$.layout.plugins.buttons = true;

//	Add buttons options to layout.defaults
$.layout.defaults.autoBindCustomButtons = false;
// Specify autoBindCustomButtons as a layout-option, NOT a pane-option
$.layout.optionsMap.layout.push("autoBindCustomButtons");

var lang = $.layout.language;

/*
 *	Button methods
 */
$.layout.buttons = {

    /**
	* Searches for .ui-layout-button-xxx elements and auto-binds them as layout-buttons
	*
	* @see  _create()
	*
	* @param  {Object}		inst	Layout Instance object
	*/
    init: function (inst) {
        var pre		= "ui-layout-button-"
        ,	layout	= inst.options.name || ""
        ,	name;
        $.each("toggle,open,close,pin,toggle-slide,open-slide".split(","), function (i, action) {
            $.each($.layout.config.borderPanes, function (ii, pane) {
                $("."+pre+action+"-"+pane).each(function(){
                    // if button was previously 'bound', data.layoutName was set, but is blank if layout has no 'name'
                    name = $(this).data("layoutName") || $(this).attr("layoutName");
                    if (name == undefined || name === layout)
                        inst.bindButton(this, action, pane);
                });
            });
        });
    }

    /**
	* Helper function to validate params received by addButton utilities
	*
	* Two classes are added to the element, based on the buttonClass...
	* The type of button is appended to create the 2nd className:
	*  - ui-layout-button-pin		// action btnClass
	*  - ui-layout-button-pin-west	// action btnClass + pane
	*  - ui-layout-button-toggle
	*  - ui-layout-button-open
	*  - ui-layout-button-close
	*
	* @param {Object}			inst		Layout Instance object
	* @param {(string|!Object)}	selector	jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
	* @param {string}   		pane 		Name of the pane the button is for: 'north', 'south', etc.
	*
	* @return {Array.<Object>}	If both params valid, the element matching 'selector' in a jQuery wrapper - otherwise returns null
	*/
    ,	
    get: function (inst, selector, pane, action) {
        var $E	= $(selector)
        ,	o	= inst.options
        ,	err	= o.showErrorMessages
        ;
        if (!$E.length) { // element not found
            if (err) $.layout.msg(lang.errButton + lang.selector +": "+ selector, true);
        }
        else if ($.inArray(pane, $.layout.config.borderPanes) < 0) { // invalid 'pane' sepecified
            if (err) $.layout.msg(lang.errButton + lang.pane +": "+ pane, true);
            $E = $("");  // NO BUTTON
        }
        else { // VALID
            var btn = o[pane].buttonClass +"-"+ action;
            $E	.addClass( btn +" "+ btn +"-"+ pane )
            .data("layoutName", o.name); // add layout identifier - even if blank!
        }
        return $E;
    }


    /**
	* NEW syntax for binding layout-buttons - will eventually replace addToggle, addOpen, etc.
	*
	* @param {Object}			inst		Layout Instance object
	* @param {(string|!Object)}	selector	jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
	* @param {string}			action
	* @param {string}			pane
	*/
    ,	
    bind: function (inst, selector, action, pane) {
        var _ = $.layout.buttons;
        switch (action.toLowerCase()) {
            case "toggle":
                _.addToggle	(inst, selector, pane);
                break;	
            case "open":
                _.addOpen	(inst, selector, pane);
                break;
            case "close":
                _.addClose	(inst, selector, pane);
                break;
            case "pin":
                _.addPin	(inst, selector, pane);
                break;
            case "toggle-slide":
                _.addToggle	(inst, selector, pane, true);
                break;	
            case "open-slide":
                _.addOpen	(inst, selector, pane, true);
                break;
        }
        return inst;
    }

    /**
	* Add a custom Toggler button for a pane
	*
	* @param {Object}			inst		Layout Instance object
	* @param {(string|!Object)}	selector	jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
	* @param {string}  			pane 		Name of the pane the button is for: 'north', 'south', etc.
	* @param {boolean=}			slide 		true = slide-open, false = pin-open
	*/
    ,	
    addToggle: function (inst, selector, pane, slide) {
        $.layout.buttons.get(inst, selector, pane, "toggle")
        .click(function(evt){
            inst.toggle(pane, !!slide);
            evt.stopPropagation();
        });
        return inst;
    }

    /**
	* Add a custom Open button for a pane
	*
	* @param {Object}			inst		Layout Instance object
	* @param {(string|!Object)}	selector	jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
	* @param {string}			pane 		Name of the pane the button is for: 'north', 'south', etc.
	* @param {boolean=}			slide 		true = slide-open, false = pin-open
	*/
    ,	
    addOpen: function (inst, selector, pane, slide) {
        $.layout.buttons.get(inst, selector, pane, "open")
        .attr("title", lang.Open)
        .click(function (evt) {
            inst.open(pane, !!slide);
            evt.stopPropagation();
        });
        return inst;
    }

    /**
	* Add a custom Close button for a pane
	*
	* @param {Object}			inst		Layout Instance object
	* @param {(string|!Object)}	selector	jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
	* @param {string}   		pane 		Name of the pane the button is for: 'north', 'south', etc.
	*/
    ,	
    addClose: function (inst, selector, pane) {
        $.layout.buttons.get(inst, selector, pane, "close")
        .attr("title", lang.Close)
        .click(function (evt) {
            inst.close(pane);
            evt.stopPropagation();
        });
        return inst;
    }

    /**
	* Add a custom Pin button for a pane
	*
	* Four classes are added to the element, based on the paneClass for the associated pane...
	* Assuming the default paneClass and the pin is 'up', these classes are added for a west-pane pin:
	*  - ui-layout-pane-pin
	*  - ui-layout-pane-west-pin
	*  - ui-layout-pane-pin-up
	*  - ui-layout-pane-west-pin-up
	*
	* @param {Object}			inst		Layout Instance object
	* @param {(string|!Object)}	selector	jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
	* @param {string}   		pane 		Name of the pane the pin is for: 'north', 'south', etc.
	*/
    ,	
    addPin: function (inst, selector, pane) {
        var	_	= $.layout.buttons
        ,	$E	= _.get(inst, selector, pane, "pin");
        if ($E.length) {
            var s = inst.state[pane];
            $E.click(function (evt) {
                _.setPinState(inst, $(this), pane, (s.isSliding || s.isClosed));
                if (s.isSliding || s.isClosed) inst.open( pane ); // change from sliding to open
                else inst.close( pane ); // slide-closed
                evt.stopPropagation();
            });
            // add up/down pin attributes and classes
            _.setPinState(inst, $E, pane, (!s.isClosed && !s.isSliding));
            // add this pin to the pane data so we can 'sync it' automatically
            // PANE.pins key is an array so we can store multiple pins for each pane
            s.pins.push( selector ); // just save the selector string
        }
        return inst;
    }

    /**
	* Change the class of the pin button to make it look 'up' or 'down'
	*
	* @see  addPin(), syncPins()
	*
	* @param {Object}			inst	Layout Instance object
	* @param {Array.<Object>}	$Pin	The pin-span element in a jQuery wrapper
	* @param {string}			pane	These are the params returned to callbacks by layout()
	* @param {boolean}			doPin	true = set the pin 'down', false = set it 'up'
	*/
    ,	
    setPinState: function (inst, $Pin, pane, doPin) {
        var updown = $Pin.attr("pin");
        if (updown && doPin === (updown=="down")) return; // already in correct state
        var
        pin		= inst.options[pane].buttonClass +"-pin"
        ,	side	= pin +"-"+ pane
        ,	UP		= pin +"-up "+	side +"-up"
        ,	DN		= pin +"-down "+side +"-down"
        ;
        $Pin
        .attr("pin", doPin ? "down" : "up") // logic
        .attr("title", doPin ? lang.Unpin : lang.Pin)
        .removeClass( doPin ? UP : DN ) 
        .addClass( doPin ? DN : UP ) 
    ;
    }

    /**
	* INTERNAL function to sync 'pin buttons' when pane is opened or closed
	* Unpinned means the pane is 'sliding' - ie, over-top of the adjacent panes
	*
	* @see  open(), close()
	*
	* @param {Object}			inst	Layout Instance object
	* @param {string}	pane	These are the params returned to callbacks by layout()
	* @param {boolean}	doPin	True means set the pin 'down', False means 'up'
	*/
    ,	
    syncPinBtns: function (inst, pane, doPin) {
        // REAL METHOD IS _INSIDE_ LAYOUT - THIS IS HERE JUST FOR REFERENCE
        $.each(state[pane].pins, function (i, selector) {
            $.layout.buttons.setPinState(inst, $(selector), pane, doPin);
        });
    }


    ,	
    _load: function (inst) {
        var	_	= $.layout.buttons;
        // ADD Button methods to Layout Instance
        // Note: sel = jQuery Selector string
        $.extend( inst, {
            bindButton:		function (sel, action, pane) {
                return _.bind(inst, sel, action, pane);
            }
            //	DEPRECATED METHODS
            ,	
            addToggleBtn:	function (sel, pane, slide) {
                return _.addToggle(inst, sel, pane, slide);
            }
            ,	
            addOpenBtn:		function (sel, pane, slide) {
                return _.addOpen(inst, sel, pane, slide);
            }
            ,	
            addCloseBtn:	function (sel, pane) {
                return _.addClose(inst, sel, pane);
            }
            ,	
            addPinBtn:		function (sel, pane) {
                return _.addPin(inst, sel, pane);
            }
        });

        // init state array to hold pin-buttons
        for (var i=0; i<4; i++) {
            var pane = $.layout.config.borderPanes[i];
            inst.state[pane].pins = [];
        }

        // auto-init buttons onLoad if option is enabled
        if ( inst.options.autoBindCustomButtons )
            _.init(inst);
    }

    ,	
    _unload: function (inst) {
    // TODO: unbind all buttons???
    }

};

// add initialization method to Layout's onLoad array of functions
$.layout.onLoad.push(  $.layout.buttons._load );
//$.layout.onUnload.push( $.layout.buttons._unload );



/**
 * jquery.layout.browserZoom 1.0
 * $Date: 2011-12-29 08:00:00 (Thu, 29 Dec 2011) $
 *
 * Copyright (c) 2012 
 *   Kevin Dalman (http://allpro.net)
 *
 * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
 * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
 *
 * @dependancies: UI Layout 1.3.0.rc30.1 or higher
 *
 * @support: http://groups.google.com/group/jquery-ui-layout
 *
 * @todo: Extend logic to handle other problematic zooming in browsers
 * @todo: Add hotkey/mousewheel bindings to _instantly_ respond to these zoom event
 */

// tell Layout that the plugin is available
$.layout.plugins.browserZoom = true;

$.layout.defaults.browserZoomCheckInterval = 1000;
$.layout.optionsMap.layout.push("browserZoomCheckInterval");

/*
 *	browserZoom methods
 */
$.layout.browserZoom = {

    _init: function (inst) {
        // abort if browser does not need this check
        if ($.layout.browserZoom.ratio() !== false)
            $.layout.browserZoom._setTimer(inst);
    }

    ,	
    _setTimer: function (inst) {
        // abort if layout destroyed or browser does not need this check
        if (inst.destroyed) return;
        var o	= inst.options
        ,	s	= inst.state
        //	don't need check if inst has parentLayout, but check occassionally in case parent destroyed!
        //	MINIMUM 100ms interval, for performance
        ,	ms	= inst.hasParentLayout ?  5000 : Math.max( o.browserZoomCheckInterval, 100 )
        ;
        // set the timer
        setTimeout(function(){
            if (inst.destroyed || !o.resizeWithWindow) return;
            var d = $.layout.browserZoom.ratio();
            if (d !== s.browserZoom) {
                s.browserZoom = d;
                inst.resizeAll();
            }
            // set a NEW timeout
            $.layout.browserZoom._setTimer(inst);
        }
        ,	ms );
    }

    ,	
    ratio: function () {
        var w	= window
        ,	s	= screen
        ,	d	= document
        ,	dE	= d.documentElement || d.body
        ,	b	= $.layout.browser
        ,	v	= b.version
        ,	r, sW, cW
        ;
        // we can ignore all browsers that fire window.resize event onZoom
        if ((b.msie && v > 8)
            ||	!b.msie
                ) return false; // don't need to track zoom

        if (s.deviceXDPI)
            return calc(s.deviceXDPI, s.systemXDPI);
        // everything below is just for future reference!
        if (b.webkit && (r = d.body.getBoundingClientRect))
            return calc((r.left - r.right), d.body.offsetWidth);
        if (b.webkit && (sW = w.outerWidth))
            return calc(sW, w.innerWidth);
        if ((sW = s.width) && (cW = dE.clientWidth))
            return calc(sW, cW);
        return false; // no match, so cannot - or don't need to - track zoom

        function calc (x,y) {
            return (parseInt(x,10) / parseInt(y,10) * 100).toFixed();
        }
    }

};
// add initialization method to Layout's onLoad array of functions
$.layout.onReady.push( $.layout.browserZoom._init );



})( jQuery );